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Soy Lecithin

lecithin foam close

Lecithin, also known as soy lecithin, is a natural emulsifier and stabilizer. It comes from fatty substances found in plant and animal tissues. It is a traditionally used ingredient in various forms, such as egg yolks, which is why eggs are used to create many emulsions.

Lecithin powder, or lecithin liquid, is just a processed version of lecithin. It has been removed from other ingredients, such as eggs or soy, so it is pure and of a set strength. It also allows you to use it without adding the flavor of eggs to your dishes. Most powdered lecithin is created as a by product of making soy oils.

Lecithin is commonly used to bind emulsions and to stabilize other mixtures. It is also used to enhance the elasticity of dough and to increase the tolerance to moisture. It can also be used to stabilize airs and other dry foams.

Lecithin disperses in any temperature liquid, which makes it an easy ingredient to work with.

Where to Buy Soy Lecithin

There are several places to purchase soy lecithin. We highly recommend, they have great service and are really good to work with (because of this, we do have an affiliate relationship with them). They also have the Texturas brand, if you prefer that. You can also find it at WillPowder and get larger quantities at

How Much Lecithin to Use

Chicken poblano lecithin foam

The amount of lecithin you need to use depends a lot on the technique you are using it for. For airs and froths it is typically used at a 0.25% to 1.0% ration by weight.

For the stabilization of emulsions, lecithin is added at a weight ratio of 0.3% to 1.0%, depending on how stabilized you want the emulsion to be. To help strengthen the emulsion, xanthan gum can also be added at a 0.1% to 0.4% ratio, which has the often desired effect of slightly thickening it.

Airs and Foams with Lecithin

Frothy tequila with lecithin citrus air

Airs and light foams are easy to create with lecithin. First, you make a flavorful liquid. Next, blend the lecithin into the liquid using an immersion blender. Most liquids can be kept at this stage for several hours.

The next step to creating a lecithin foam is to introduce air into the liquid. This is often does by some kind of agitation. Typically a whisk or immersion blender is used, but any type of agitator can be used including aquarium pumps, standing blenders, mixers with a whisk attachment and whipping siphons.

When you are foaming the liquid remember that the goal is not to mix or blend the liquid but to incorporate air into it. Because of this, using an immersion blender in a wide container where a quarter of the blender is out of the liquid can be ideal. This process can take 2 to 5 minutes, depending on the liquid being foamed. Let the lecithin foam sit for a minute or two to stabilize and then it can be plated on a dish. The foam will usually last for 30 to 60 minutes but it will lose volume the whole time.

The percent of lecithin added is usually between 0.25% to 1% of the weight of the liquid, 0.6% is a good starting point if you are unsure how much to use. Using too much lecithin will actually cause the foam to collapse. The exact amount needed will depend on the specific liquid being used and how watery or oily it is, as well as how many particles are still in it.

Lecithin Emulsions

Modernist vinaigrette 2

The other common use for lecithin is to stabilize emulsions. Lecithin powder will bind and slightly thicken the emulsion, helping it to hold longer before breaking and usually adding a subtle creamy texture to it.

Stabilizing an emulsion with lecithin is very easy. Simply blend in an appropriate amount of lecithin into the emulsion and it should start to stabilize right away.

For an emulsion lecithin will usually be added as 0.5% to 1% of the liquid by weight. To help strengthen the emulsion you can also add some xanthan gum at a 0.1% to 0.4% ratio, which has the sometimes desired benefit of slightly thickening it.

Interested in more information like this?

Modernist Cooking Made Easy: Getting Started covers many of the popular modernist techniques such as gelling, spherification, and foams. It also explores modernist ingredients like agar, sodium alginate, tapioca maltodextrin, and xanthan gum.

It is all presented in an easy to understand format along with more than 80 recipes and photographs.

I might be biased but I think
it's the best way to learn about modernist cooking!

Soy Lecithin Recipes and Articles

Candied Bacon with Chive Air Recipe

Deviled eggs with bacon and chives are a common party food but this recipe takes it up a notch by using modernist cooking techniques to make it candied bacon and chive air! Your party guests will enjoy the crispy, sweet, spicy and smoky flavors of the candied bacon while the chive air adds a fresh onion flavor with a hint of sweetness. A fun treat for your family and friends.

Xanthan Strengthened Maple Vinaigrette Recipe

This is a simple modernist vinaigrette to make and utilizes both xanthan gum and lecithin to strengthen and thicken it. I really like the sweet maple syrup with the tangy balsamic vinegar. This goes well on salads, especially ones with berries. You can also add a little more xanthan gum and use the vinaigrette as a sauce on fish or chicken.

How to Make a Soy Lecithin Foam

One of the most popular methods in molecular gastronomy is the creation of foams. While they are associated with modernist cuisine, foams have been used for centuries and range from meringues and whip cream to bread and quiche. Here we will look at how to make a foam with soy lecithin.

Soy Lecithin Citrus Air Recipe

Within molecular gastronomy one of the easiest things to experiment with are foams. There are a lot of ingredients that can cause foams, and a lot of variety depending on what type of foam you are trying to make. For my preparation I wanted to make an "air", basically a really, really light foam, similar to the fizzy head you get when you pour soda or a light beer. For this type of foam soy lecithin is perfect.

Frothy Tequila with Citrus Air Recipe

My wife loves tequila, especially straight or in a margarita. I wanted to do a fun twist for her so I decided to make a cocktail with tequila that would resemble a beer.

This frothy tequila with citrus air recipe is a fun play on a margarita, tequila shot, and beer combination. If you like tequila you'll love this!

Soy Foam Recipe

Soy foams are an easy way to get started with molecular recipes and this soy sauce foam recipe is no exception. It's very easy to make and the only special tools are soy lecithin and an immersion blender.
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