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Is soy milk in America similar to the type in East Asia?

Seasoned Advice Asked by Maroon on May 22, 2021

Finding soy milk in the States isn’t very difficult – it’s generally stocked in supermarkets and used as an alternative to dairy. However, I’m not sure if the flavour of typical American soy milk (even the “unsweetened” variety) is sufficiently similar in taste to the soy milk I’ve had in East Asia.

As an example – in Hong Kong, if I remember correctly, Vitasoy sells unsweetened soy milk with the ingredients listed as:

Water, soy beans

Comparatively, the Silk brand that sells non-dairy alternatives lists additional ingredients on their soy milk (even the “original” variety or the “unsweetened” one), such as additional vitamins and sea salt.

Is the soy milk commonly sold in supermarkets in the US (outside of places such as Asian supermarkets) similar in taste to the type found in East Asia? I’ve heard that there might be some differences, but I don’t have enough “experience” with this to judge if those accounts are correct.

4 Answers

Most of the popular soy milk in the US is sweetened, thickened and flavored. It's also may have ingredients added as stabilizers, preservatives, the usual.

East Asian style soy milk is simply the result of grinding mature soy beans (usually dry ones that have been soaked in water) and water and then straining the result.

The differences would be pretty stark in some regards: US soy milk is much thicker (like cow's milk), and generally sweetened, which the East Asian soy milk will not be.

One version of soy milk made like this in the US is "West Soy Soymilk, Organic, Unsweetened", the ingredients are purely "Water, Soybeans".

Other than buying this type of soy milk, your other option is to make it. To do this, follow this procedure (Adopted from "Modernist Cuisine"):

  1. Soak dry soy beans in a 1:1 mass ratio with water for at least 14 hours. Drain.
  2. Puree drained soybeans with in 3:1 mass ration (water to dry bean weight). Puree until mixture is fine particulate, almost "creamy and grainy" in texture.
  3. Pour mixture into sauce pan and add boiling water in a 1.5:1 (boiling water to dry soy bean mass) and simmer about 20 minutes. Let cool.
  4. Strain mixture through cheese cloth.

The resulting components will be soy milk (the strained liquid) and okara (soy bean pulp). The okara has several culinary uses, so you may want to save it, or you can toss it. The yield of this will be about 1 kg of soy milk for 250 g of dried soy beans, or about a half of a gallon per pound.

Correct answer by Ron on May 22, 2021

East Asian soy milk and American soy milk taste very different, and not just because of added ingredients like sugar and emulsifiers.

Soy beans contain an enzyme called lipoxidase, which breaks down unsaturated fatty acids into shorter chain lipids. For American markets, manufacturers presoak the beans in solvents such as calcium hydroxide in order to destroy this enzyme. After the enzyme is gone, the solvent is deactivated with an acid to form a neutral pH product. In East Asian markets, no one bothers with this added step, and just leave the lipoxidase in there.

Why the difference? Taste, mostly. Remember The shorter chain lipids mentioned before? They taste, well, bean-y. Soy milk manufacturers like Silk found through trial and error that Americans want their soybean milk to taste more like milk, and less like soybean, so this bean taste must be neutralized.

For East Asian people who grew up drinking soybean milk, soybean milk needs to taste like, well, soybean.

Answered by Tenway Norsing on May 22, 2021

What I noticed, is that I'm invariably allergic to all soy milk based products produced in Western countries (I live in Europe), whatever the brand, but that I have no allergy to soy bean based Asian products (Soy sauce, tofu, fresh soy beans, soy milk of Asian origin).

I'm also allergic to vegetable milk made with almonds or rice. There must be a difference in production.

Answered by Jessica on May 22, 2021

Typically most (American) Unsweeteneded Soy Milk probably taste different because it contains very little soy beans and have other ingredients added where as (Asian) Unsweetened Soy Milk bought from the Asian supermarkets simply have soy beans and water. It's a thicker, beanier(that is not a word) flavor. I think it tastes more natural.

Answered by Victoria on May 22, 2021

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