Stir, strain into an old fashioned glass with a large cube/sphere. Garnish with a grapefruit peel, expressed.
For something a bit sweeter and less bitter, add 1/4 oz creme de pamplemousse liqueur.
Was listening to Valery Gergiev's version of Igor Stravinsky's "Le Sacre du printemps" ("The Rite of Spring") when creating this drink, and the name seemed appropriate. Entry in the Difford's Guide Suze contest: https://www.diffordsguide.com/cocktails/recipe/4294/rite-of-spring