Spicy Larb with Cabbage Cups

Name: Spicy Larb with Cabbage Cups
Ingredients: 1/2 cup raw skin-on peanuts; 2 Tbsp. vegetable oil; 4 garlic cloves, crushed; 1 lb. ground pork, beef, or lamb; Kosher salt; 1 large shallot, thinly sliced into rings; 5 scallions, thinly sliced; 4 red or green Thai chiles, thinly sliced; 1 lemongrass stalk, bottom third only, tough outer layers removed, thinly sliced; 2 Tbsp. fresh lime juice; 1 Tbsp. plus 1 tsp. fish sauce; 1 cup torn mint leaves; 1/4 head of green cabbage, halved crosswise, leaves separated; Cooked short-grain rice and lime wedges (for serving)