Chicken stock works very well with this recipe. Vegetable or mushroom stock works sometimes. The choice depends on the kind of edible mushrooms employed, especially if using stock made out of cubes or concentrate. Mushroom stock, which would seem the logical choice, sometimes masks the flavor of the most delicate mushrooms.
Zucchini is high in fiber and low in calories. Using stock, skim milk, and evaporated milk we make lighter the traditional vichyssoise. Aromatic herbs and spices give extra flavor, as the curry does in this recipe.