I'm just about to bulk prime and bottle a Choc Liqueur Stout made with
1.7 kg Thomas Coopers OS Stout
1.5kg TC Dark Malt Extract
750 gm Dex
350gm Chocolate Malt
2x Coopers Kit Yeast
50ml Chocolate Liqueur Essence
The plan is to bulk prime with 6gm sugar /litre and add the liqueur essence at the same time. I notice the label on the essence bottle states it contains Preservative 202 which I believe is potassium sorbate which kills yeast. My question is by adding this 50ml of essence to a 21 litre brew is it going to stop the remaining yeast from carbonating the stout.