of grease or butter

Rendered animal fat or butter, primarily composed of triglycerides, that serves as a cooking medium and ingredient in culinary preparations. Rendered fat (also called lard, schmaltz, or tallow depending on the source animal) is produced by slowly heating fatty tissues until the fat liquefies and separates from connective tissue, which is then strained and cooled. Butter, derived from dairy cream, is an emulsion of butterfat, water, and milk solids. Both fats have high smoke points relative to unrefined oils and are valued for their capacity to conduct heat evenly and impart characteristic flavor to dishes. Rendered fats are nearly shelf-stable at room temperature, while butter requires refrigeration in warmer climates.

Rendered grease and butter are fundamental cooking fats used across virtually all culinary traditions for sautéing, frying, roasting, and baking. In European cuisine, butter is the primary fat for pastries, sauces, and finishing dishes, while rendered pork fat (lard) is traditional in baking pie crusts and in many Central European and Latin American cuisines. Rendered chicken fat (schmaltz) is essential to Jewish and Eastern European cooking. Both ingredients contribute flavor depth and create desirable textural qualities in baked goods through their ability to coat flour particles and create tender, flaky results. They also serve as flavor carriers and emulsifiers in sauces and gravies.