Grapefruit, Elderflower & Thyme Vodka Cocktail

"Have you had a Roll in the Hay recently? If not, Valentine’s Day is coming up, so that might be a good time to do it! We’re talking about our tasty (and tarty) vodka, grapefruit, elderflower and thyme cocktail, topped with rosè champagne and best served in two glasses. If you know what I mean."
-- @nerdswithknives