Is there a such thing as soy stock for soup?

There isn't a widely recognized or commercially produced "soy stock" like you might find with chicken, beef, or vegetable stock.

However, you can create a flavorful broth using soy-based ingredients:

* Soy Sauce: A common ingredient in many Asian-inspired soups, soy sauce provides a salty umami flavor. You can use it to season a basic vegetable broth or simmer it with other ingredients like mushrooms, seaweed, or ginger for a more complex flavor.

* Soy Milk: Adding soy milk to a vegetable broth can create a creamy, nutty depth of flavor.

* Tofu: While tofu isn't a liquid, you can use it to create a broth. Simmer tofu in water with aromatics like onions, ginger, and garlic for a savory and protein-rich broth.

Instead of "soy stock," you might come across terms like:

* Soy-based broth: A broth made with soy-based ingredients like soy sauce or soy milk.

* Shiitake mushroom broth: Shiitake mushrooms have a naturally savory, umami flavor that can be used to create a broth that's similar to a "soy stock" in taste.

Ultimately, the key to creating a flavorful soup is to layer flavors and experiment with different ingredients. You can use soy-based products to create a delicious and unique broth for your soups.