sanso gismu

x₁ is a sauce/topping/gravy/frosting for use with x₂, containing ingredient(s) including x₃.

x₃ is in x₁, an ingredient/part/component of sauce x₁. See also sanmi, mixre, stasu.

In notes:

mixre: x₁ (mass) is a mixture/blend/colloid/commingling with ingredients including x₂.
sanmi: x₁ (mass) is a meal composed of dishes including x₂.
stasu: x₁ is a quantity of soup/stew/olla/olio [food] of ingredients including x₂.
sansrmole: x₁ (loi) is a quantity of (Mesoamerican/Hispanic/Latino) mole sauce for use with/on dish x₂ and of a composition which includes ingredients x₃.
tortiia: x₁ is a Mexican tortilla, a flat round bread made out of x₂ (e.g. cornmeal or flour)