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how to make mayo

Here’s a simple, reliable way to make thick, creamy mayonnaise at home, plus some quick variations and troubleshooting tips.

Quick Scoop

Homemade mayo is just an emulsion of egg + acid + oil, blended until thick.

Use a neutral oil, a fresh egg, and something tangy (lemon juice or vinegar), and you can have mayo in about 1 minute.

Basic 1‑Minute Mayo (Immersion Blender)

Ingredients (about 1 cup of mayo)

  • 1 whole egg (room temperature if possible)
  • 1 tablespoon lemon juice (fresh is best)
  • 1 teaspoon Dijon or dry mustard
  • 1–2 teaspoons white wine vinegar or apple cider vinegar
  • 1/2 teaspoon fine salt (adjust to taste)
  • 1 cup neutral oil (light olive, avocado, canola, or vegetable oil)

Equipment

  • Immersion (stick) blender
  • Tall, narrow jar (wide‑mouth mason jar works great)

Steps

  1. Add all ingredients to the jar in this order: egg, lemon juice, vinegar, mustard, salt, then pour in the oil on top.
  2. Let everything sit for 15–30 seconds so the egg and acids settle at the bottom.
  3. Put the immersion blender all the way to the bottom, covering the egg, and switch it on. Do not move it for about 10–15 seconds; you’ll see a thick, pale layer forming at the bottom.
  4. Once the bottom is thick and creamy, slowly lift and tilt the blender, moving it up and down to pull in the remaining oil until everything turns into a smooth, thick mayo.
  5. Taste and adjust: add a bit more salt or lemon juice if you want it brighter or more “store‑bought” tasting.

Store in a sealed jar in the fridge for up to about 5 days.

Blender/Food Processor Method

If you don’t have an immersion blender, you can still make mayo in a regular blender or small food processor.

Steps

  1. Add egg, lemon juice, vinegar, mustard, and salt to the blender or processor and blend for ~15 seconds.
  2. With the machine running, very slowly drizzle in the oil in a thin stream, especially for the first 1/4 cup. Emulsification happens here—if you go too fast, it can break.
  3. Once it’s visibly thickening, you can pour the rest of the oil a bit faster, but still steadily, until fully incorporated and creamy.
  4. Taste and adjust the seasoning.

Flavor Variations

Once you have the basic mayo down, you can turn it into all kinds of sauces and spreads.

  • Garlic mayo (aioli‑style): Blend in 1–2 small grated garlic cloves or roasted garlic.
  • Spicy mayo: Stir in sriracha, chili paste, or chopped Calabrian chilies, plus a squeeze of lime.
  • Herb mayo: Add finely chopped parsley, dill, chives, or tarragon and a little extra lemon.
  • Smoky mayo: Stir in smoked paprika or chipotle powder.

Add extras after the mayo has already thickened, so you don’t mess with the emulsion.

Why Mayo Fails (and How to Fix It)

Common reasons it doesn’t thicken

  • Pouring oil too fast at the beginning (for blender/processor methods).
  • Ingredients too cold, so they don’t emulsify easily.
  • Old egg or low‑power blender causing weak emulsification.

Fixing broken or runny mayo

If your mayo stays thin or “splits,” you can often save it.

  • Method 1:
    1. In a clean bowl or jar, add 1 fresh egg yolk.
    2. Slowly whisk or blend in the broken mayo a spoonful at a time, like you’re adding oil again.
    3. It should re‑emulsify into a thick sauce.
  • Method 2 (if only slightly thin):
    • Keep blending for a bit longer and add a small splash of lemon juice or vinegar; sometimes it tightens up.

If it still won’t come together, start a fresh batch and treat the failed one as the “oil” you add slowly to the new yolk.

Safety and Storage Tips

  • Use very fresh eggs and keep the mayo refrigerated at all times.
  • Discard if it smells off, separates badly, or has been left out at room temperature for a long time.
  • For extra safety, you can use pasteurized eggs from the store.

TL;DR: Put a whole egg, lemon juice, vinegar, mustard, salt, and 1 cup neutral oil in a tall jar, sink an immersion blender to the bottom, blend 10–15 seconds without moving, then slowly move it up and down until thick—season to taste and chill.

Information gathered from public forums or data available on the internet and portrayed here.