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The bracha "bora m'nai mezonot" is usually said over food made from the five grains (wheat, barley, oats, rye, or spelt) that is not bread. I have heard people say that one should never say this bracha during Pesach because we do not eat or even own any of these foods except for matzah. I am not sure that this inference is true 100% of the time. Are there any cases when one should say this bracha during Passover?
A few possibilities that you could confirm or deny (feel free to use other examples):
Egg matzah (allowable for Sephardim and Ashkenazi children) is made with apple juice instead of water. At the seder, a Sephardi would say "ha motzi" because the day takes precedence, but maybe not on chol ha moed or on the seventh and eighth day of the festival.
A very small amount of matzah might not be enough to make a ha motzi on.
If one used matzo meal to make chremslach (matzo-meal pancakes), the result is similar to a flour pancake that one would make a mezonot on the rest of the year.
It could be that the "never mezonos" statement holds up, but I would appreciate if it could be confirmed or shown to have exceptions.