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How Long to Marinate Flank Steak

Marinating times by cut, overnight guidance, and tips.

CutMinimumMaximumOptimal
whole2 hrs24 hrs4-12 hrs
sliced thin0.5 hrs4 hrs1-2 hrs

Overnight OK?

Yes, safe to marinate overnight

Over-Marinate Risk

medium

Flank steak benefits from tenderizing marinades, but keep high-acid versions under 12 hours.

Frequently Asked Questions

How long should I marinate Flank Steak?

Flank Steak marinating time varies by cut: whole (4-12 hours), sliced-thin (1-2 hours). Always marinate in the refrigerator.

Can I marinate Flank Steak overnight?

Yes, Flank Steak can be safely marinated overnight (8-12 hours) in the refrigerator. This is a great option for meal prep.

Can you marinate Flank Steak too long?

Yes, over-marinating is possible for Flank Steak. Extended acid breaks down the long muscle fibers, making the outer layer pasty while the center stays tough

Should Flank Steak be refrigerated while marinating?

Yes, always marinate Flank Steak in the refrigerator. Never marinate at room temperature, as bacteria can grow rapidly between 40-140°F.

Does acid-based marinade change the marinating time?

Flank steak benefits from tenderizing marinades, but keep high-acid versions under 12 hours.