“The keys to this amazing chicken matzo ball soup are slow-cooking it and using boxed matzo ball mix. Some people swear by seltzer, but I find it’s not necessary—the mix makes perfect, fluffy matzo balls every time due to its baking powder. Add chicken fat (schmaltz) for extra-authentic flavour. The matzo balls will taste as if they came straight from Grandma’s kitchen.” —Shannon Sarna, South Orange, New Jersey