We don’t eat anything with a strong vinegar flavor, like sour pickles or marinated cucumbers or sweet & sour fish (unless they are made with lemon juice rather than vinegar). Some in the family do not eat chrein, though some do, particularly as the chrein is sweet, and not very vingary. Also, as far as nuts go, we only regrain from eating walnuts and pecans, as those seem to be what are known as egozim. Also, though we eat only pas Yisroel all year, we are more careful about doing so during aseres y’mei t’shuva.