Your mayo just split? This quick fix brings it back to life in under a minute
Making homemade mayonnaise is often very quick... until the sauce refuses to set. It remains liquid, separates or becomes grainy: the mayonnaise is said to have "sliced". This happens even to experienced cooks.
Fortunately, all is not lost. In most cases, it's possible to recover the sauce with a few simple gestures. Here are the most effective ways of recovering a mayonnaise that's gone off and returned to its creamy texture ;)
Why can mayonnaise slice?
Mayonnaise is an emulsion, a stable mixture of two elements that don't normally mix: the oil and the water in the egg.
The egg yolk acts as a binder. But if the emulsion doesn't work properly, the sauce can separate.
There are several possible causes for this problem:
- the oil was added too quickly
- the ingredients were not at the same temperature
- the sauce was not whipped sufficiently
- too much oil was added to start with
The mayonnaise must rise gradually for the emulsion to form properly.
The most effective method: using a new egg yolk
This is the best-known and most reliable trick.
In a clean bowl :
- break a new egg yolk
- whisk lightly
- then add the failed mayonnaise a little at a time, as if it were the oil for a new mayonnaise.
As you gradually incorporate the preparation, the emulsion will reform.
The new egg yolk helps recreate the emulsion and stabilize the sauce.
The water trick
If the mayonnaise is simply too thick or starting to separate, a small amount of water may sometimes be enough.
Add a tablespoon of lukewarm water to a bowl, then gradually whisk in the unsuccessful mayonnaise.
In some cases, the sauce will immediately return to a homogeneous texture.
The mustard technique
The mustard can also help revive the emulsion.
In a bowl :
- add a spoonful of mustard
- whisk lightly
- then add the mayonnaise a little at a time.
Mustard contains emulsifying agents that make it easier to revive the sauce.
Using a hand blender
If the mayonnaise is slightly grainy or poorly emulsified, the hand blender may be all you need.
Place the sauce in a narrow container and blend for a few seconds.
This helps to distribute the oil and reform the emulsion.
Mistakes to avoid next time
To avoid mayonnaise slicing, a few simple reflexes can make all the difference.
Add oil too quickly
Oil should always be poured in a very thin stream, especially at the beginning.
Use cold ingredients
Ingredients should ideally be at room temperature.
Don't whisk enough
The emulsion is created by the movement of the whisk or mixer.
A successful mayonnaise is always built up gradually.
An easy-to-save sauce
Even if a mayonnaise goes bad, it's almost never necessary to throw it away. With a new egg yolk, a little water or mustard, it's often possible to catch up with the sauce in just a few seconds.
Homemade mayonnaise simply requires a little method, but once you've mastered the technique, it becomes one of the easiest sauces to make... and one of the tastiest.
Adèle Peyches
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