Gravy ships frozen with dry ice, which may have evaporated during shipment. This is normal. Please take care not to touch any remaining dry ice with bare hands.
Upon receipt, store unopened in freezer for up to 10 months. Once opened, store in refrigerator for up to 5 days.

Gravy can be cooked from frozen or thawed.
Frozen: Put sealed bag into pot of simmering water until gravy softens, 12–15 minutes. Carefully remove bag, drain water and dry pot. Open bag and pour gravy directly into pot. Cook over medium heat until hot, stirring frequently, 3–5 minutes.
Thawed: Open bag and pour gravy directly into pot. Cook over medium heat until hot, stirring frequently, 5–7 minutes. Alternatively, put sealed bag into pot of simmering water until warmed through, 5–7 minutes. Carefully remove bag, drain water and dry pot. Open bag and pour gravy directly into pot. Cook over medium heat until hot, stirring frequently, 3–5 minutes.

Williams Sonoma Test Kitchen Caramelized Onion Gravy