Carvel's plain soft serve, scooped ice cream and sorbet carry no seed oil at all - it comes in with the cone, the peanut butter sauce and the baked mix-ins, hitting 60 of 230 menu items. The additive load is the real problem, with mono- and diglycerides and tetrasodium pyrophosphate in the ice cream bases themselves.
Carvel's own 91-page Nutrition & Allergen Guide gives a full ingredient statement for all 230 items, and the split is unusually clean: the plain soft serve, the plain scooped ice creams and the whole non-dairy sorbet line contain no seed oil at all. Seed oil arrives with the vessel or the mix-in - all three cones (canola, or a canola/palm/soybean shortening), the Reese's peanut butter sauce that carries 12 items on hydrogenated rapeseed, cottonseed and soybean oil, the pecans, the pound cake and the brownie bites. 60 of 230 items are affected. The Brown Bonnet shell is coconut oil, not a seed oil. Additives are the weaker axis: mono- and diglycerides in 173 items, tetrasodium pyrophosphate in 163, propylene glycol in 70, titanium dioxide in 13, TBHQ in 6 Reese's items. There is no fryer.