A well-balanced oregano marinade is one of the more versatile things in a home cook's repertoire, since the same base adapts to poultry, red meat, and vegetables with only minor adjustments to marinating time.
Whisk together 1/3 cup olive oil, the juice of 1 lemon, 3 cloves minced garlic, 1 to 2 tablespoons dried oregano, 1 teaspoon salt, and 1/2 teaspoon black pepper. This makes enough for about 1.5 to 2 pounds of protein or a large batch of vegetables.
Marinate chicken thighs or breasts for at least 30 minutes, up to 4 hours for a stronger flavor; beyond that, the acid in the marinade can start to break down the chicken's texture unfavorably. Grill over medium-high heat until cooked through, about 6 to 7 minutes per side for boneless thighs, adjusting for thickness.
Lamb chops or a butterflied leg of lamb both take well to a longer marinating time than chicken, up to 8 hours or overnight, since lamb's stronger flavor stands up well to extended contact with the marinade's acidity and garlic. Grill to the desired doneness; lamb is often served closer to medium-rare than chicken, so watch internal temperature accordingly.
Toss cut vegetables, zucchini, bell peppers, red onion, eggplant, in the marinade and let sit for 20 to 30 minutes before grilling or roasting; vegetables don't need nearly as long as meat to pick up the marinade's flavor, and over-marinating can make some vegetables, particularly zucchini, slightly mushy.
For a stronger oregano presence, increase to 2 tablespoons; for a milder version suited to more delicate fish, reduce to 1 teaspoon and shorten marinating time to 15 to 20 minutes, since fish absorbs marinade flavors faster than meat and can turn mushy if left too long in an acidic marinade.
Mediterranean oregano is the traditional and generally better choice for this marinade, given its Greek-leaning flavor profile. Since this is a raw or lightly cooked application, fresh oregano works especially well here too; see Fresh vs Dried Oregano for more on why raw applications like this one suit fresh oregano better than a long-simmered dish would.
Because the base marinade works across chicken, lamb, and vegetables, it's a practical way to build a single cooking session into a complete meal without needing separate seasoning approaches for each component. Marinating chicken and vegetables at the same time, staggering their start times based on the guidance above, lets both go on the grill close together for an efficient dinner.
Yes, since this is a raw application, fresh oregano works well here; use about 1 tablespoon fresh in place of 1 teaspoon dried, adjusting to taste. See Fresh vs Dried Oregano for more on when each form suits a given application.
Yes, combining raw meat and marinade in a freezer bag and freezing is a reasonable way to marinate and store at the same time; thaw in the fridge before cooking, and the meat will have marinated during the thawing process.
Yes, it works well for pork chops or a smaller pork roast, following a similar marinating time to chicken.
Yes, the marinated protein or vegetables roast well in a 425°F (220°C) oven if grilling isn't an option, following roughly the same timing as a standard roast for that ingredient.
Make a double batch of the marinade and keep half in the fridge for up to a week for a second use later in the week, saving prep time on a busy night. Planning a grilling night into a weekly meal plan around whatever protein or vegetables are on hand makes this marinade an easy, repeatable go-to rather than a one-off recipe.