Thaw frozen spinach in the fridge overnight or under cold running water for quicker use. After thawing, squeeze out excess liquid using a clean towel or fine mesh strainer; the released water dilutes sauces and can make dishes soggy.
Reheating methods:
Adjust seasoning after reheating, as freezing can mute flavors. Use thawed spinach in cooked recipes rather than raw salads for best texture.