Place it just after the dessert reveal, before the reaction shot, then follow it with Woody Woodpecker Laugh to keep the food-focused joke going. Keep it as the single exclamation in the sequence, so the custard moment stays the focus and the follow-up laugh does not crowd it.
Über diesen Sound
This is a short vocal clip of a warm, drawn-out 'Oooh Arrr' delivered in a cheerful pirate-like voice, lasting just under two seconds. It feels playful, cosy and a little cheeky, like a happy shout shared over pudding. The sound comes from an Ambrosia Custard advert, where the exclamation gives the dessert a light-hearted, seafaring flourish.