TCS Foods (Time/Temperature Control for Safety)

What Makes Food TCS?

Time/Temperature Control for Safety foods need controls to prevent pathogen growth or toxin formation. Animal foods, heat-treated plant foods, raw seed sprouts, cut melons, cut leafy greens, cut tomatoes, and untreated garlic-in-oil are important examples. Cooked rice and baked potatoes can be TCS despite not being high-protein foods.

Classify the actual product

The Food Code includes pH/water-activity interaction tables and product-assessment provisions. Do not classify every product using only pH 4.6 or water activity 0.85. Heat treatment, packaging, formulation, and evidence that the product does not support growth or toxin formation matter. Some cheeses, commercial acidified products, and protected air-cooled hard-boiled eggs have specific exclusions. Butter or all dairy products should not automatically be classified alike.

Dry crackers and dry pasta are generally non-TCS, but can still carry pathogens. An intact melon can be non-TCS while the cut melon is TCS. Shelf-stable canned food can become TCS after opening; follow the product and code requirements.

Handling controls

Generally hold cold TCS food at ≤41°F or hot at ≥135°F. Cooked TCS cooling requires 135→70°F within two hours and 135→41°F within six hours total. Ambient-ingredient preparations cool to ≤41°F within four hours. On-site cooked/cooled leftovers reheated for hot holding generally need 165°F/15 seconds within two hours; commercially processed packaged RTE food has a 135°F provision.

Refrigerated RTE TCS food held more than 24 hours generally needs date marking, with a maximum seven days at ≤41°F counting preparation/opening as day one, subject to specific exemptions and any shorter safety-based use-by date. Raw shell eggs have a separate ambient-air temperature allowance.

Planned time control requires written procedures and correct starting, marking, monitoring, and service/discard conditions. Qualifying food may use four hours or a six-hour cold option; four hours is not a universal allowance for all preparation and holding.