It’s important to use a very deep pot when boiling the soya chunks as there is a lot of foam that forms when boiling.
The amount of water depends on the dimentions of your pot but there should be enough water to cover most of your soya chunks (they tend to float). So for this recipe around 5-6 cups of water.
Find it online: https://cookingwithparita.com/recipe/soya-chunks-chikun-curry/