I've just re-visited this cocktail (25-Sep-21) and changed the specs. to make less sour. I also eased the ginger syrup back a bit and added sugar. Previous recipe: 1½ bourbon, ¾ lemon juice, ¼ ginger syrup, ½ Lillet Blanc, and ½ pamplemouse liqueur.
Hi there. Well, you said you have changed the specs to make it less sour, but i noticed that you've suppressed the pamplemousse liqueur as well, didn't you? Or you just forgot to mention it on new recipe?
Sorry! Many thanks for bringing to my attention. When uploading, I must have selected pink grapefruit juice rather than pink grapefruit liqueur. Now corrected, and I will rephotograph and repromote.