how many grams in a cup of poppy seeds?

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things people ask

• How much is a cup of poppy seeds in grams?
  144 g for a level cup, using the spoon-and-level method from the King Arthur weight chart. Poppy seeds flow almost like a fine grain, so scooping straight from the bag and tapping the cup can add 5-10 g. For a full poppy-seed pastry batch where you're cooking down 1-2 cups of seeds with milk and sugar, weighing keeps the filling from going stiff or soupy.
• Why does my poppy-seed filling come out gritty?
  Whole seeds in mohn filling stay gritty unless you grind them — traditional hamantaschen and Polish makowiec recipes call for ground or crushed poppy seeds simmered with milk. A cup of whole seeds (144 g) yields slightly less by volume once ground. If your recipe specifies ground poppy seeds by the cup, weigh the whole seeds first, then grind, to keep the ratio honest.
• Do poppy seeds need to be refrigerated in bulk?
  Yes. Poppy seeds are roughly 45-50% oil, which goes rancid faster than most pantry staples. If you're buying a cup or more at a time, store them in a sealed container in the fridge or freezer. Rancid seeds taste sharp and bitter and will wreck a whole batch of filling — smell before you measure out 144 g into a saucepan.

related conversions

• Poppy Seeds: tablespoons to grams
• Poppy Seeds: teaspoons to grams
• Poppy Seeds guide