The onion drizzle is what makes Al's Gourmet Sausage stand out in the International District. They keep a stainless-steel tub filled with onions simmering in their own juicy deliciousness on the grill. Each time a customer orders a sausage with complimentary onions, the cook dips his tongs into the vat, pinches a helping of those golden-brown morsels, and then shakes the excess juice onto the still-cooking wieners. As a result, every frank is imbued with a hint of savory onion flavor. When those sausages are topped with actual grilled onions (and of course mustard), one's immediate instinct is to order another.