Delicious food not started — revolting excessive colouring (7)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

The delicious food must be MANNA, with its M removed. Excessive is OTT (over the top) and since it’s revolting it becomes TTO. Annatto is one spelling of many for “a bright orange colouring matter obtained from the fruit pulp of a tropical American tree, Bixa orellana.”