Grilled Farmer Sausage with Pepper Relish (Boerewors Rolls with Chakalaka)

Ingredients

• 8 boerewors or another spiced beef or pork grilling sausage (about 2 1/4 lb.)
• 1 tbsp. olive oil
• 8 hot dog buns, toasted if desired
• 3 tbsp. olive oil
• 1 large yellow onion, finely chopped (2 cups)
• Salt
• 1 each green, red, and yellow bell pepper, finely chopped (4 1/2 cups total)
• 2 tbsp. mild curry powder
• 2 green bird's-eye chiles, minced (1 Tbsp.)
• 2 large garlic cloves, minced
• One 2-inch piece ginger, peeled and grated (2 Tbsp.)
• 5 large carrots, scrubbed and coarsely grated (4 cups)
• 1 ³⁄₄ cups canned diced tomatoes and their juices (14 oz.)
• 2 tbsp. tomato paste
• Leaves from 2 thyme sprigs
• Freshly ground black pepper