en_tn_condensed/mat/16/06.md

the yeast of the Pharisees and Sadducees

Here "yeast" is a metaphor that refers to evil ideas and wrong teaching. Translate as "yeast" here and do not explain its meaning in your translation. This meaning will be made clear in 16:12. (See: rc://en/ta/man/jit/figs-metaphor)