You can make clear the understood information. AT: "the other side of the lake" or "the other side of the Sea of Galilee" (See: [[rc://en/ta/man/translate/figs-ellipsis]])
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/translate/figs-metaphor]])
"You who have such little faith." Jesus addresses his disciples this way because their concern about not bringing bread shows they have little faith in Jesus to provide for them. See how you translated this in [Matthew 6:30](../06/30.md).
Jesus uses a question to rebuke his disciples for not understanding what he just said. AT: "I am disappointed that you think it was because you forgot to bring bread that I talked about the yeast of the Pharisees and Sadducees." (See: [[rc://en/ta/man/translate/figs-rquestion]])