Couscous
Always fluff couscous with a fork, rather than a spoon, as this will keep the grains light and fluffy rather than stodgy.
Matzoh balls
Keeping your hands moist when rolling Matzoh balls makes it easier to handle the sticky dough.
Honey candies
Avoid making honey candies, a popular Jewish treat for Passover or Hanukkah, when the weather is humid as the honey in the mix absorbs the moisture from the air.