Steamed Mustard Greens with Balinese Sambal

Name: Steamed Mustard Greens with Balinese Sambal
Ingredients: 2 tablespoons minced shallots; 1 stalk of fresh lemongrass, tender inner white part only, minced (1 tablespoon); 1 makrut lime leaf, minced (1/4 teaspoon) or 1/4 teaspoon finely grated lime zest; 1 tablespoon fresh lime juice; 1 tablespoon coconut oil; 1 teaspoon soy sauce; Kosher salt; 1 bunch mustard greens (12 ounces), stemmed, leaves coarsely chopped; 1 tablespoon extra-virgin olive oil; Sweet potato chips, broken into small pieces, for garnish (optional)