salta gismu

x₁ (mass) is a quantity of salad [food] with ingredients/components including x₂.

x₂ is in x₁, an ingredient/part/component of x₁. See also mixre, stasu.

jbovlaste

In notes:

mixre: x₁ (mass) is a mixture/blend/colloid/commingling with ingredients including x₂.
stasu: x₁ is a quantity of soup/stew/olla/olio [food] of ingredients including x₂.
omle: x₁ is an omelette containing x₂