3 sweet potatoes
3 tablespoons extra-virgin olive oil, divided
2 medium shallots, finely diced
2 small cloves garlic, finely diced
1 stalk celery, finely diced
1 small carrot, finely diced
1 fennel bulb, half finely diced, half shaved on a mandoline
2 teaspoons ground cumin
2 cups low-sodium chicken or vegetable stock
1 teaspoon white wine vinegar
1 cup black lentils
1 large handful fresh parsley
1 large handful fresh cilantro
1 large handful fresh dill
1 clove garlic, minced
1 tablespoon capers or torn olives
¼ teaspoon habanero chili ,minced
1⁄3 cup extra-virgin olive oil
2 lemons or limes, juiced
Salt and freshly cracked pepper
1 serrano chili, sliced thin
Labne or full fat Greek yogurt, to serve