Soups & Stews
Mastering Jason's Deli Irish Potato Soup copycat recipe delivers that signature creamy texture and tangy depth you crave after just one bite. The secret lies in balancing vinegar-kissed crusts with velvety mayonnaise, a technique I've perfected through careful testing.
This isn't just soup—it's a comforting hug in a bowl that rivals the restaurant version. 💛
What sets this recipe apart is the precise method of simmering potatoes until fork-tender while building layers of flavor through slow-cooked onions and celery. The vinegar trick creates that signature crust without overpowering the creamy base, and the mayonnaise blend ensures that signature velvety mouthfeel.
Every spoonful delivers that perfect balance of tangy, savory, and rich.
By the time you're done, you'll have a pot of copycat perfection that's creamy yet light, with potatoes that hold their shape and a broth so flavorful it disappears between bites.
The aroma alone will have everyone asking what's for dinner. This version stays true to the original while making it easy to recreate at home with simple ingredients and straightforward steps.
Serve it as-is for maximum authenticity or customize with toppings like shredded cheddar or green onions. The beauty of this recipe is how versatile it remains while delivering that exact restaurant experience. Let's get cooking—your taste buds will thank you.
Ingredients for jason's deli irish potato soup copycat
Simple ingredients that transform into restaurant-quality Irish potato soup with velvety texture and tangy depth.
| Ingredient | Amount | Notes |
|---|---|---|
| Russet Potatoes 🥔 | 2 ½ lb | Yukon gold or red potatoes work too |
| Yellow Onions 🧅 | 1 whole | Medium size, diced finely |
| Celery Stalks 🥬 | 3 whole | Trimmed, diced small |
| Butter 🧈 | ½ cup | Unsalted, for flavor base |
| All-Purpose Flour 🌾 | ¼ cup | For thickening roux |
| White Vinegar 💧 | ½ cup | Distilled preferred |
| Mayonnaise 🥛 | ½ cup | Full-fat for creaminess |
| Chicken Broth 💧 | 4 cups | Low-sodium preferred |
| Heavy Cream 🥛 | ½ cup | Full-fat for richness |
| Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Ground Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Garlic Cloves 🧄 | 3 cloves | Minced for aromatic base |
| Bay Leaves 🍃 | 2 whole | For subtle depth |
| Fresh Thyme 🌿 | ¼ tsp | Dried works at 1/3 amount |
The potatoes are the foundation—Russet gives that signature fluffy texture, but Yukon gold works beautifully too. Whole Foods or Trader Joe's carry the best selection of organic varieties. For onions and celery, buy fresh—wilted or yellowing stalks will compromise flavor. The key is dicing them uniformly for even cooking. Pre-cut vegetable mixes save time but lack the freshness of freshly chopped. Garlic cloves should be plump and firm, not shriveled or sprouting. Costco often has great bulk prices for these staples, but individual grocery stores carry perfectly fine options.
No white vinegar? Apple cider vinegar works equally well for the crust. The mayonnaise is non-negotiable for that signature velvety mouthfeel—Duke's or Hellmann's are reliable brands. Short on heavy cream? Half-and-half with extra butter gets you close. The flour must be all-purpose—cake flour won't thicken properly. For the broth, low-sodium is crucial to control seasoning. Swap chicken broth for vegetable broth for a vegetarian version, but reduce salt by half. Fresh thyme is ideal, but dried thyme at one-third the amount works in a pinch. Penzeys carries excellent dried herbs if you prefer convenience.
Store the soup in airtight containers for up to 5 days in the refrigerator, though it's best enjoyed within 3 days for optimal texture. The vinegar crust develops more depth over time, so leftovers often taste even better. For freezing, portion into single-serving containers—it reheats beautifully and keeps for 3 months. The potatoes may soften slightly upon reheating, but a splash of broth restores creaminess. Whisk vigorously before serving to redistribute the mayonnaise and create that signature crust again. Make a double batch—this soup disappears faster than you can say 'copycat recipe'
Why You'll Love This Recipe
- I swear by this trick: dice the onions and celery once, then freeze them in a bag. Toss in straight from frozen—no thawing, no extra work. The butter and flour roux does all the heavy lifting while you chop potatoes in big chunks (they’ll break down anyway).
- No-Chop Shortcuts: I swear by this trick: dice the onions and celery once, then freeze them in a bag. Toss in straight from frozen—no thawing, no extra work. The butter and flour roux does all the heavy lifting while you chop potatoes in big chunks (they’ll break down anyway).
- That Crispy-Creamy Magic: The secret’s in the roux—cook that butter and flour until it’s golden, not brown, and you get this perfect balance. Thick, velvety broth with chunks of potato that stay tender but still hold their shape? It’s the kind of soup that makes you forget you’re not at Jason’s Deli.
- Game for Any Gathering: Bring it to potlucks in a slow cooker (just reheat and serve) or make a double batch for lazy Sundays. Honestly, I’ve served it at book club meetings, tailgates, and even as a “fancy” appetizer with crusty bread. It’s the one dish that never feels out of place.
Step-by-step instructions for Jason's deli Irish potato soup copycat recipe
Here's the method that delivers that signature vinegar-kissed crust and velvety mayonnaise magic.
🍳 Step 1: Cook the Potato Base to Perfection
Peel and dice the 2.5 lb russet potatoes into ½-inch cubes for even cooking. In a large pot, melt the 0.5 cup butter over medium heat and add the diced potatoes. Cook for 5 minutes, stirring occasionally, until they begin to soften slightly.
Add the finely diced 1 whole yellow onions and 3 whole celery stalks, along with the 3 minced garlic cloves, 2 whole bay leaves, and 0.25 tsp fresh thyme. Stir to combine and cook for another 3 minutes until the onions become translucent and the celery softens. This aromatic base forms the flavor foundation of the soup.
Pour in the 4 cups chicken broth and bring to a boil. Reduce heat to medium-low and simmer for 15 minutes until the potatoes are fork-tender. You'll know they're ready when they collapse easily under gentle pressure but still hold their shape slightly. This step ensures your soup has that signature creamy texture without needing excessive blending.
🍳 Step 2: Build the Signature Roux and Vinegar Crust
In a separate medium saucepan, melt the remaining 0.5 cup butter over medium heat. Whisk in the 0.25 cup all-purpose flour to create a smooth roux. Cook for 1-2 minutes until the mixture turns a light golden color and smells nutty—this is your thickening agent.
Slowly whisk in the 0.5 cup white vinegar and continue cooking for another 1 minute until the mixture thickens slightly. This vinegar step is what gives the soup its signature tangy crust. Remove from heat and stir in the 0.5 cup mayonnaise and 0.5 cup heavy cream until fully combined and smooth. The mayonnaise adds that signature creamy richness that makes this soup so special.
🥘 Step 3: Combine and Season to Restaurant Quality
Using an immersion blender (or carefully transferring to a blender in batches), blend about half of the potato mixture until smooth but still slightly textured—this creates that perfect creamy yet rustic quality. Return the blended portion to the pot and stir well to combine.
Season with 1.5 tsp salt and 0.5 tsp ground black pepper, then taste and adjust if needed. The soup should have a perfect balance of tangy, creamy, and savory flavors. If it's too thick, add a splash of the reserved cooking liquid; if too thin, simmer for another minute to reduce slightly. This is where you fine-tune the texture to match that deli-perfect consistency.
⏰ Step 4: Finish and Serve with Signature Crust
Return the soup to a gentle simmer over low heat and stir in the remaining unblended potato mixture. Let it heat through for 3-4 minutes while maintaining a gentle simmer—this ensures all the flavors meld together without breaking down the mayonnaise.
For the signature crust, ladle the soup into individual bowls, leaving a little space at the top. Spoon a small amount of the reserved roux mixture (about 1 teaspoon per bowl) over each serving. The heat from the hot soup will create that beautiful golden crust on top. Serve immediately while the crust is still warm and crispy—this is the moment that makes this copycat recipe truly special.
Pro Tips For Making Jason'S Deli Irish Potato Soup Copycat
- Cook Celery First: I learned this the hard way—if you toss celery in with onions and potatoes, it’ll turn to mush before the onions even soften. Sauté the celery alone for 3-4 minutes first, then add onions. That crisp bite at the start makes the whole soup taste fresher.
- Dice Potatoes Evenly: Russets break down unevenly, and you’ll end up with some chunks still rock-hard while others turn to glue. Cut them into ½-inch cubes—no bigger, no smaller—and soak them in cold water for 10 minutes to rinse off excess starch. (Yes, even if you’re impatient like me.)
- Bloom the Flour: Skipping this step means your roux will taste raw and floury. Melt the butter over medium heat, then whisk in the flour and cook for 1-2 minutes until it smells nutty and golden. That’s the difference between a soup that tastes homemade and one that tastes like a shortcut.
- Simmer, Don’t Boil: After adding broth, keep the heat low enough that the soup barely bubbles at the edges. Boiling turns potatoes to mush and makes the soup watery. A gentle simmer for 20-25 minutes keeps them tender but holds their shape—just like Jason’s does. (Your future self will notice.)
Essential equipment for perfect results
Large Pot Essentials
Start with a 6-8 quart heavy-bottomed pot—I recommend All-Clad Stainless Steel or Calphalon for even heat distribution. The pot must handle the soup's volume without boiling over.
A lid with a vented steam hole helps control evaporation during simmering. For extra insurance, use a pot with a handle that stays cool to the touch. 🔥
Immersion Blender Must-Have
An immersion blender is non-negotiable for that signature creamy texture without transferring hot soup to a separate blender. The Ninja MagiMix or Hamilton Beach models are my top picks—they handle potato chunks effortlessly.
Avoid cheap versions that struggle with thick mixtures. A replacement blade set is a good idea for longevity.
Measuring Tools
Precision matters in this recipe. Use a stainless steel measuring cup set (like OXO Good Grips) for accurate flour and broth measurements. A digital kitchen scale for the potatoes ensures consistency—2.5 lb is critical for proper texture.
A fine-mesh strainer helps remove bay leaves cleanly before serving. Don't skip these basics—they make all the difference.
Vinegar & Cream Tools
For the vinegar crust, a whisk with a long handle (like Cuisinart Stainless Steel) helps incorporate it smoothly into the roux. A small saucepan (2-3 quart) is perfect for making the roux separately.
When adding the mayonnaise and heavy cream, use a rubber spatula for gentle folding to maintain that velvety consistency. A small ladle (like Ozeri 10-inch) helps portion the crust mixture evenly over each serving.
Optional Pro Upgrades
A thermometer (like ThermoWorks Thermapen) ensures your soup reaches the ideal 185-190°F for food safety without overcooking. For extra richness, a microplane helps zest 1 tsp lemon peel into the finished soup.
A fine-mesh sieve catches any stray potato bits before serving. These extras take your copycat soup from "good" to "restaurant-quality."
Nutrition facts
Frequently asked questions
Why does Jason's Deli potato soup have that signature crust?
The crust comes from a clever mix of white vinegar and a light roux made with butter and flour. When heated, this combination creates a golden, crispy layer on top that contrasts beautifully with the creamy base. The vinegar also adds that signature tangy depth that sets this soup apart from traditional creamy versions.
Can I make this soup without mayonnaise?
You can try, but you'll lose that signature velvety texture and richness. For a similar effect, blend in ½ cup sour cream or Greek yogurt instead, though the flavor won't be identical. The mayonnaise is what gives the soup its signature mouthfeel—it's worth tracking down a good full-fat brand for the best results.
How do I fix soup that's too thin or too thick?
For thin soup, simmer uncovered for 5-10 minutes to reduce the liquid. If it's too thick, whisk in 1-2 tablespoons of warm broth or milk until smooth. The key is to adjust gradually—this soup should coat the back of a spoon but still be easy to ladle. Taste as you go to avoid overcorrecting!
Can I make this soup vegetarian?
Yes! Swap the chicken broth for vegetable broth and use vegetable-based mayonnaise (like Vegenaise). For extra richness, stir in ¼ cup nutritional yeast with the cream. The flavor will be slightly different but still delicious. Just reduce salt by half since vegetable broth is often saltier.
What's the best way to reheat leftovers?
Gently reheat on the stove over low heat with a splash of broth or milk to restore creaminess. Avoid microwaving—it can make the potatoes gummy. For the crust, stir in 1 teaspoon of vinegar and reheat just until hot. The crust may not be as crispy as fresh, but the flavors will still be amazing!