Thrishul is a fireworks cake, catalogue code Z22, from the "Premium Cakes" line of a Sivakasi, Tamil Nadu fireworks maker. It is listed as "Thrishul"; the box reads "TRISHUL". A fireworks cake is a boxed multi-shot firework. It comes in a near-square box printed in pink and magenta, with cartoon rockets rising among colourful fireworks bursts and the name in bold silver capitals on the front. Catalogue code: Z22