I just bought this meat yesterday, but when I broke the block apart to cook tacos, the inside is completely grey while the outside is red. It smells okay, but it looks unappetizing and risky. What wou

The 3-Step Freshness Check

Check	Safe / Fresh Indicator	Spoilage Warning Sign
Color Pattern	Red on the exterior, grey in the center.	Entire block turned dull grey, brown, or green on the surface.
Texture	Firm, moist, and non-sticky.	Sticky, tacky, or slippery/slimy coating on the surface.
Smell	Mild, faint metallic scent.	Sour, sharp, pungent, or ammonia-like odor.

Safe Storage & Cooking Guidelines

Refrigeration Limits: Fresh ground beef lasts 1 to 2 days in the refrigerator at or below $40^\circ\text{F}$ ( $4^\circ\text{C}$ ).
Safe Internal Temperature: Always cook ground beef to an internal temperature of $160^\circ\text{F}$ ( $71^\circ\text{C}$ ) using a meat thermometer to eliminate foodborne pathogens like E. coli or Salmonella.
Freezing for Longevity: Wrap tightly in moisture-resistant plastic wrap or freezer bags, pressing out air, to store safely in the freezer for 3 to 4 months.

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