Substitute for greek-yogurt in marinades
Quick answer
Plain whole-milk yogurt is the closest swap—use it 1:1 for Greek yogurt in any marinade. If you only have sour cream, use 3/4 cup sour cream thinned with 2 tbsp milk or water per 3/4 cup Greek yogurt called for. Both preserve the tenderizing acidity and cling that make yogurt marinades work.
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| Rank | Substitute | Ratio (replaces 1 cup greek-yogurt) | Notes |
|---|---|---|---|
| #1 | Plain whole-milk yogurt | 1:1 (e.g., 1 cup plain whole-milk yogurt for 1 cup Greek yogurt) | Greek yogurt is just strained plain yogurt, so unstrained whole-milk yogurt does the same job in a marinade—the lactic acid tenderizes protein and the fat carries fat-soluble aromatics. It's slightly thinner, so it may drip off more during grilling; pat the surface lightly before high-heat cooking to reduce flare-ups. Low-fat or nonfat plain yogurt works but produces a noticeably less rich-tasting crust. |
| #2 | Sour cream | 3/4 cup sour cream + 2 tbsp whole milk or water per 1 cup Greek yogurt | Sour cream has similar acidity (pH ~4.5) and fat content to full-fat Greek yogurt, so it tenderizes and coats nearly as well. It's thicker than Greek yogurt, which is why thinning is necessary—an unthinned sour cream marinade can form a paste that scorches before the interior cooks. Flavor is slightly more buttery and less tangy; that difference is noticeable with delicate proteins like fish but largely undetectable on lamb or chicken thighs. |
| #3 | Buttermilk | 3/4 cup buttermilk per 1 cup Greek yogurt (reduce other liquid in the marinade if any) | Buttermilk is the traditional soaking liquid for Southern fried chicken precisely because its lactic acid tenderizes without breaking down surface texture the way vinegar or citrus can. It's much thinner than Greek yogurt, so it won't form a coating or crust—it functions more as a wet brine than a paste marinade. Use it when you want tender meat and don't need the thick coating (e.g., pre-fry soaks), not when you're going for a tandoori-style char. |
| #4 | Coconut milk (full-fat canned) | 1 cup full-fat coconut milk per 1 cup Greek yogurt | This is the standard substitute in dairy-free Southeast Asian and Indian-adjacent marinades where yogurt appears. Full-fat canned coconut milk has enough fat to carry aromatics and keep meat moist, but it contains almost no acidity, so it does not tenderize the way yogurt does. Compensate by adding 1 tbsp lime juice or 1 tsp apple cider vinegar per cup. The flavor profile shifts noticeably toward coconut; this works well with chicken and shrimp but clashes with lamb dishes where yogurt's tang is a key flavor note. |
Why marinades is different
In a marinade, Greek yogurt does three distinct things: its lactic acid gently denatures surface proteins for tenderness, its fat carries fat-soluble aromatics (garlic, spices, citrus zest) into the meat, and its thick texture creates a coating that chars into a flavorful crust over high heat. This combination is harder to replicate than in baking or dips, where only one or two of those properties matter. A substitute that handles the acidity but not the viscosity—or the viscosity but not the acidity—will produce a measurably different result.
Common mistakes
The most common error is using a low-fat or nonfat substitute, which reduces cling, produces a thinner crust, and can cause the marinade to steam rather than char over high heat. A close second is over-marinating when using a thinner substitute like buttermilk—proteins soaked more than 8 hours in a thin acidic liquid can turn mushy on the surface, a problem less likely with thick Greek yogurt. Skipping the acid compensation when using coconut milk is the third frequent mistake; without added acid, longer marinating times don't improve tenderness.
Greek yogurt earned its place in marinades—particularly in South Asian, Middle Eastern, and Eastern Mediterranean cooking—because it solves three problems at once: tenderizing, flavoring, and coating. Any substitute needs to address at least two of those functions to produce a comparable result. Plain whole-milk yogurt is the only swap that addresses all three without adjustment, which is why it ranks first by a significant margin over the other options.
When you’re working with substitutes that lack viscosity (buttermilk) or acidity (coconut milk), adjust your technique rather than just swapping volumes. Thinner marinades benefit from a shorter soak and a pat-dry before cooking; unacidified marinades need added citrus or vinegar to do any real tenderizing work. Getting those adjustments right matters more for a high-heat application like grilled chicken or roasted lamb than it does for most other uses of Greek yogurt.
Frequently asked questions
- Can I use skyr (Icelandic-style yogurt) as a 1:1 substitute for Greek yogurt in marinades?
- Yes. Skyr has nearly identical protein content, acidity, and thickness to Greek yogurt and behaves the same way in a marinade. Use it 1:1 with no adjustments.
- Will the marinade still form a good char crust without Greek yogurt?
- It depends on the substitute. Plain whole-milk yogurt and sour cream (thinned) both produce a comparable crust because they contain enough protein and fat to brown over high heat. Buttermilk and coconut milk are too thin and watery to form the same crust—they're better for soaking than for surface coating.
- How long can I marinate chicken in a Greek yogurt substitute before it gets mushy?
- With thick substitutes (plain yogurt, sour cream), 24 hours is the practical maximum for chicken thighs; breasts and fish should not exceed 8 hours. With thinner, more acidic substitutes like buttermilk, keep chicken to 4–8 hours and fish to 1–2 hours. The thinner the liquid and the higher the acidity, the faster the surface texture degrades.
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