5 ears fresh corn (husks and silks removed)
2 tablespoons olive oil
2/3 cup diced yellow onion (1/4-inch dice)
1 tablespoon minced fresh garlic
2 tablespoons finely minced lemongrass
2 tablespoons grated fresh ginger
1 jalapeño pepper (finely minced, seeds and ribs optional)
2 cups diced potatoes (1/4-inch dice)
1 can (14 ounces) light coconut milk
1/2 teaspoon ground cumin
10 ounces crab meat
1 tablespoon fresh lime juice
1/4 cup minced fresh cilantro or flat leaf parsley