Fat Rat, Crab Fat, Turkey Fat and Other Natural Fats: A Nutrition Guide

Search terms like “fat rat,” “crab fat,” and “turkey fat” pop up for very different reasons — from culinary traditions to animal nutrition curiosity. This guide brings together the nutritional science behind natural animal fats, covers turkey fat as a cooking ingredient, explores crab fat (tomalley) and its nutritional profile, briefly addresses fat rat in its biological context, and touches on the Fat Rat Songs cultural phenomenon. Think of it as the ultimate guide to obscure fat-related questions answered in one place.

Whether you’re a cook exploring fat skimmer techniques for cleaner stocks, a curious nutrition reader, or someone who landed here via any of those searches, you’ll leave with genuinely useful information about animal fats and their role in cooking and health.

Turkey Fat: Nutritional Profile and Culinary Uses

Turkey fat is rendered from the fatty deposits and skin of turkey during cooking. It’s a semi-solid fat at room temperature (similar in consistency to lard) with a characteristic savory, poultry flavor. Nutritionally per tablespoon (14 g):

• Calories: 124
• Total fat: 14 g (4 g saturated, 5.9 g monounsaturated, 2.5 g polyunsaturated)
• Cholesterol: 13 mg

Turkey fat has a better monounsaturated-to-saturated ratio than lard and is rich in oleic acid — the same heart-healthy fat in olive oil. It has a smoke point of approximately 375–400°F (190–204°C), making it suitable for roasting, sautéing, and basting. Using a quality fat skimmer to collect turkey fat from pan drippings during roasting allows you to capture this flavorful cooking medium for later use.

Crab Fat (Tomalley): What Is It and Should You Eat It?

The yellowish-green substance inside a crab’s body cavity — colloquially called “crab fat” — is actually the hepatopancreas, a gland that functions as both liver and pancreas in crustaceans. This substance is also called “tomalley” in lobster. It has a rich, intensely flavored taste and is considered a delicacy in many culinary traditions, particularly in Southeast Asian crab dishes and New England lobster preparations.

Nutritionally, crab tomalley is very high in fat and contains concentrated amounts of cholesterol and fat-soluble nutrients. It also bioaccumulates contaminants (heavy metals, PCBs) from the crab’s diet more than muscle tissue does — the FDA and some state health agencies advise limiting consumption, particularly for pregnant women and children. For occasional consumption in healthy adults, the culinary experience it delivers is considered acceptable by most toxicologists.

Fat Skimmer Techniques for Clean Cooking

A fat skimmer — also called a gravy separator or fat separator — is a kitchen tool used to remove excess fat from broths, stocks, and pan drippings. Proper fat-skimming technique:

1. Allow the liquid to rest undisturbed for 10–15 minutes so fat rises to the surface.
2. Use a ladle-style skimmer to spoon fat from the top — starting at the edges where fat accumulates most densely.
3. For large batches, refrigerate overnight: fat solidifies and can be lifted off in a solid layer.
4. For quick skimming, a fine-mesh skimmer dragged lightly across the surface collects fat without removing broth.

Properly defatted stock has 40–70% fewer calories than undefatted versions while retaining all flavor compounds from the cooking process.

What Is a “Fat Rat” in Biological Context?

In animal biology and research contexts, “fat rat” typically refers to rodent obesity models used in metabolic research — specifically Zucker fatty rats and diet-induced obese (DIO) rat models. These animals develop obesity, insulin resistance, and metabolic syndrome when fed high-fat diets, and they serve as important research tools for understanding human obesity mechanisms. The fat rat research model has contributed significantly to our understanding of leptin signaling, adipokines, and bariatric surgery outcomes. From a pure animal nutrition standpoint, wild rats with access to high-fat food caches exhibit the same metabolic responses as other mammals — excess calorie storage as adipose tissue.

The Fat Rat Songs: A Cultural Note

The Fat Rat is an electronic music producer (real name Fredrik Häggström) known for uplifting instrumental tracks widely used in online content creation. Songs like “The Calling,” “Unity,” and “Monody” have billions of streams and are recognized as some of the most licensed background music tracks on YouTube. The Fat Rat’s music represents a distinct corner of internet culture — no nutritional relevance here, but worth acknowledging for readers who landed on this term with completely different intentions.

Natural Animal Fats: A Balanced View

Animal fats — turkey fat, duck fat, beef tallow, chicken schmaltz — provide rich culinary flavor at higher caloric density than plant oils. Their saturated fat content warrants moderation for cardiovascular health, but their complex flavor profiles and stability at high cooking temperatures make them valuable in a balanced cooking repertoire. The key is using them intentionally in modest quantities rather than as a primary cooking fat for every meal.

Bottom line: Turkey fat is a flavorful, nutritionally reasonable cooking fat suitable for roasting and basting in moderate quantities. Crab fat (tomalley) is a delicacy best consumed occasionally due to contaminant bioaccumulation. A fat skimmer helps reduce calorie density in stocks and drippings without sacrificing flavor. Natural animal fats occupy a legitimate place in culinary tradition and can fit into a health-conscious diet when used with awareness of portion size.