More dark rum with a twist and hint of elderflower in cocktail (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

More dark rum with a twist and hint of elderflower in cocktail MUR (RUM; “with a twist” indicates reversal) + [ E <lderflower> (“hint of” means first letter only) in KIR (=cocktail, of white wine and blackcurrant liqueur)]