For me, it would more likely be the pumpkin - I react to winter squashes in many of the same ways as sugar. OTOH, I don't know if 20 points is a "spike," but it certainly is staying up there a long time.
I'm sure others will be more useful! What else is in the custard?
5'4" 39yo mother to five sweeties & married to their AMAZING DaddyGrok
Current Weight: 175lb__________________________________Goal: 135lb
Deadlift: 240lb________________________________________Back Squat: 165lb
Bench: 130lb__________________________________________Pre ss: 85lb
***Winning a 20-year war against binge eating disorder***