José Pizarro's Salt-Crusted Potatoes with Cilantro Mojo

INGREDIENTS

• Leaves from a bunch of fresh cilantro, roughly chopped
• 3 large garlic cloves, roughly chopped
• 1 teaspoon freshly ground cumin seeds
• 2 1/4 pounds evenly sized waxy new potatoes, such as fingerling, scrubbed but unpeeled
• 1 green chili pepper, seeded and chopped
• Scant 1/2 cup extra-virgin olive oil
• Sea salt flakes
• 2 teaspoons white wine vinegar, Muscatel if possible