Boron, or common boraxo a pinch. Kills bacteria and fungus.1/2 tsp to 1/2 cup water taken one doses. But it also kills your necessary gut bacteria, so follow up with live culture plain no sugaryogurt and natural fermented pickles or sauerkraut or other probiotic food.
Used to be meat was packed in bOrax to prevent spoiling but was replaced by refrigeration. 20 mule teams hauled it to the big packing plants, hence 20 Mule Team boraxo. Look it up.