When prepping protein for a marinade, trim away excess fat and silver skin more aggressively than for plain cooking to allow the marinade to penetrate effectively. This ensures maximum flavor infusion.
The primary goal of trimming protein for a marinade is to maximize the surface area available for the marinade to interact with. Here's a breakdown of the key differences compared to general cooking prep:
Fat Removal: Marinades are often water-based or acidic, and fat repels water. Therefore, removing excess fat is crucial. While some fat is desirable for flavor and moisture during cooking, too much will prevent the marinade from properly penetrating the meat. Trim fat more thoroughly than you would for a simple roast or pan-fry.
Silver Skin and Membranes: Silver skin, a thin, tough membrane found on some cuts of meat, is impermeable to marinades. It also tends to shrink and toughen during cooking. Remove it meticulously to allow the marinade to reach the meat fibers directly. This step is often skipped in simpler cooking methods, but it's essential for effective marinating.
Surface Scoring (Optional): For thicker cuts of meat, consider scoring the surface lightly in a crosshatch pattern. This creates more surface area and allows the marinade to penetrate deeper. Be careful not to cut too deeply, as this can affect the meat's texture.
Uniformity: Trim the protein into relatively uniform pieces. This ensures that the marinade affects all pieces equally and that they cook at the same rate.
After trimming, pat the protein dry with paper towels before adding it to the marinade. Excess moisture on the surface can dilute the marinade and hinder its absorption.