To thicken mayonnaise, whisk in a small amount of oil or egg yolk. To thin it, add a little water or lemon juice, whisking until you reach the desired consistency.
Detailed Explanation:
Adjusting the consistency of homemade mayonnaise is a common need, as factors like egg size and blending speed can affect the final result. Here's a breakdown of how to thicken or thin your mayo:
To Thicken Mayonnaise:
- Add More Oil: This is the most straightforward method. Slowly drizzle in a teaspoon of oil (preferably the same oil used in the original recipe) while whisking vigorously or blending on low speed. Be careful not to add too much at once, as this can cause the emulsion to break.
- Add Egg Yolk: If adding more oil doesn't quite do the trick, whisk in a small amount of egg yolk (about 1/4 of a yolk at a time). The lecithin in the yolk acts as an emulsifier, helping to bind the oil and water together and thicken the mayonnaise.
To Thin Mayonnaise:
- Add Water: Start with a teaspoon of cold water and whisk it in thoroughly. Continue adding water, a teaspoon at a time, until you reach the desired consistency.
- Add Lemon Juice or Vinegar: These acidic ingredients not only thin the mayonnaise but also add flavor. Use the same acid that was used in the original recipe. Add a teaspoon at a time, tasting as you go, to avoid making the mayonnaise too tart.
Regardless of whether you're thickening or thinning, add the liquid or yolk very gradually and whisk or blend continuously to ensure a smooth and stable emulsion.
Pro Tip:
If your mayonnaise breaks (separates), don't throw it out! Start with a fresh egg yolk in a clean bowl. Slowly drizzle the broken mayonnaise into the fresh yolk while whisking constantly. The fresh yolk will help re-emulsify the mixture.