The plural form of foodstuff is foodstuffs.
Yes, but using foodstuff as a plural does not follow its stricter definition.
No. Waffle cones is a plural compound noun. Here, also, the word waffle (the foodstuff) seems like a noun adjunct rather than an adjective.
Foodstuff not digested or absorbed in body are usually excreted from the body.
No. As long as it is something sold as a foodstuff, it must meet pesticide requirements as a foodstuff. Cottonseed oil receives no exemption when sold as a foodstuff.
grocer
Bran and that is ure answer
To colour foodstuff
Basic foodstuff and medicine.
a jawbreaker
The preparation of foodstuff.
rye bread
Chocolate.