Combine your chicken, garlic, shallots, coriander, kecap manis, and water. Stir it up, cover it, and let it rest for at least 2 hours—overnight is gold.
While the chicken chills out, make your sauce. Finish blending the peanuts then add the garlic, and chili with water. Simmer it slowly with lime leaves, kecap manis, and tamarind paste until it thickens up. This should smell like something from a street stall.
Thread your chicken onto the soaked skewers. Got a grill? Fire it up. If not, a hot pan with butter works beautifully. Cook each side until golden and juicy.
Spoon peanut sauce all over your satay, then top with crispy shallots, fresh lime, chilies, and those glorious fried onions for crunch.