34. Adding porridge to a bottle. One may add a small amount of porridge, corn flour, rice flour, or the like to a baby’s bottle [as a nutritional supplement or for consistency] without a shinui. This is because the milk does not even become a thin mixture; it remains liquid and can be poured like water. This involves no possible concern of losh (Issue 349, par. 14).
35. Thick mixture. We mentioned earlier that for a baby’s needs, one may follow the majority of poskim, who hold putting in the water is not an issur d’oraisa. Thus, a shinui in the mixing, e.g., in a crisscross motion, helps when preparing porridge; there should preferably also be a shinui in the order the ingredients are added. Thus, there is a mutar way to prepare even a thick mixture for a baby.
36. Thin mixture. When making thin porridge on Shabbos, one should make a shinui in the order the ingredients are added. Then, there is a machlokes haposkim whether a shinui is also required in the mixing (see Issue 349, par. 18) or if it is enough to only do a shinui in the mixing.
