Place an ice shard in a highball glass with at least 9-10 oz capacity. Add Michelada mix and lager. Add the other ingredients to a shaker, dry shake, add ice and shake again, and strain into the highball over the Michelada mixture. Garnish with an orange twist, three or four drops of Sriracha bitters, and coconut shavings. Serve with straw.
Use Mexican lager and make Michelada mix (Maggi, Worcestershire, hot sauce, etc) to taste. Alternatively, use ginger beer and cassis. For tamarind syrup, mix defrosted tamarind pulp in equal parts with simple syrup.
Partly inspired by Gabriella Mlynarczyk's Enter the Dragon (see source reference). Layering taken from the Pouring Ribbons cocktail One Flight Up. Named after the Julio Cortázar story "La noche boca arriba."