Ingredient

Csl

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Source
Not animal-derived
Allergen
No
Role in food
CSL is used as a nutrient source in fermentation processes, particularly for producing antibiotics, …

What it is

CSL stands for Corn Steep Liquor. It is a byproduct of the corn wet-milling process, where corn kernels are steeped in water containing sulfur dioxide. This process softens the kernels and separates them into starch, fiber, germ, and protein.

Why it's used

CSL is used as a nutrient source in fermentation processes, particularly for producing antibiotics, enzymes, and amino acids. It can also contribute flavor and act as a dough conditioner in baked goods. It is found in breads, rolls, and some frozen appetizers.

Health notes

CSL is generally recognized as safe (GRAS) by the FDA for use in food. It is a natural product of corn processing and is not typically associated with adverse health effects at the levels found in food. International bodies like JECFA have evaluated it, and EFSA has also reviewed its safety. No significant controversies exist regarding its use in typical food applications.

Allergen info

CSL is derived from corn, which is not one of the nine FDA major allergens. It does not contain gluten.

Products containing Csl

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Theodoro Baking Co. Variety Pack Rolls Breads & Buns 261kcal 8.7Protein 2.2Fat 47.8Carbs Harris Baking Co Dinner Rolls Breads & Buns 298kcal 8.8Protein 3.5Fat 59.6Carbs Harris Baking Co Brown N Serve Rolls Breads & Buns 269kcal 11.5Protein 5.8Fat 50Carbs Harris Baking Co Wheat Brown & Serve Rolls Breads & Buns 288kcal 9.6Protein 4.8Fat 51.9Carbs Save Mart Supermarkets Inc. Sandwich, Ham & Cheddar Prepared Subs & Sandwiches High in sodium — 30% DV per serving High in saturated fat — 25% DV per serving High in cholesterol — 25% DV per serving 207kcal 12.8Protein 8.8Fat 20.3Carbs Perfection Foods Company Inc. 9 Mini Bagel Dogs Frozen Appetizers & Hors D'oeuvres High in sodium — 22% DV per serving 260kcal 9.1Protein 13.0Fat 26.0Carbs Amana Bakery Marble Rye Bread, Marble Rye Breads & Buns 296kcal 7.4Protein 3.7Fat 59.3Carbs Al Cohen's Rye Bread Bakery Inc. Dinner Rolls Breads & Buns 260kcal 8Protein 4Fat 50Carbs Cheese Sliders Cheeseburgers, Cheese White Castle System Inc. Cheese Sliders Cheeseburgers, Cheese Frozen Appetizers & Hors D'oeuvres High in sodium — 27% DV per serving High in saturated fat — 40% DV per serving 327kcal 15.4Protein 17.3Fat 27.9Carbs Harris Baking Co Texas Toast Breads & Buns 273kcal 9.1Protein 3.0Fat 54.5Carbs Hearthside USA, LLC Italian Sub Large Prepared Subs & Sandwiches High in sodium — 150% DV per serving High in saturated fat — 100% DV per serving High in cholesterol — 47% DV per serving 233kcal 13.3Protein 12.1Fat 16.1Carbs Dudley's Bakery, Inc. Breads, Western Honey Wheat Breads & Buns 298kcal 14.9Protein 8.5Fat 44.7Carbs

Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.