This easy all-purpose gluten-free marinade is the best back pocket condiment for chicken or steak. The combination of balsamic vinegar, tamari or GF soy sauce, and mustard, plus a hint of sweetness from honey, enhances any protein, whether you're roasting or grilling it. My husband (who doesn't eat beef) also uses it on grilled or roasted vegetables! The vinegar is dealer’s choice, but balsamic will give you slightly more sweetness. He prefers to salt the meat and veggies directly, but I a...