Does anyone know/have an opinion on what the best food for Coil healer would be?

I was thinking a Mind food, but there doesn't appear to be any Mind food, or any food with a primary stat bonus on it for that matter. Googling around I found discussions claiming that Grape Juice (+8% Piety, +4% Vitality, +2% Spell Speed) was the best option.

But wouldn't Determination be a better choice than Piety as Determination increases the amount you heal?

Chicken and Mushrooms (+8% Determination, +4% Vitality, +2% Accuracy) appears to have the highest Determination boost, but Accuracy is a bit useless.

Has anyone done any testing or number crunching?