They process, of which the female partner excretes breast milk, from her breast into a cup/container. After doing so, the
male proceeds to very aggressively, analy fist the female, until her asshole is at least, constantly 2'' wide in diameter. Once the ass is prepped, the breast milk is poured into her rectum via a funnel, followed by rough
anal sex, that churns said milk into butter, which can then be used on
toast, or other foods.