I would not recommend vaping extracts from nuts, since they will be of high lipid content, not to mention proteins, neither of which are good to vape. Lipids do not expel from lungs well and can lead to serious health problems, and proteins will easily decompose into God knows what radicals and oxidation species, and even if they don't decompose are not something you want to be inhaling into your lungs. There may be other risky compounds too.
I recommend simply buying flavors that are meant to mimic nuts. There are plenty.
I don't know if extracting from cloves would be a problem like with nuts or fruits, but eugenol (clove flavor) is somewhat cytotoxic, although I don't know if it is in the concentrations vapers would be exposed to.
You are not the only one asking about whole-food extracts, Vikaernes. I think people need to realize that the lungs are simply not capable of safely inhaling everything that we eat. Stick with flavors made from artificial and natural flavor compounds, and by "natural" I mean the flavor industry definition, not flavorings made from whole-food extracts. Vanilla is MAYBE ok as an extract, since it normally does not contain a lot other than vanillins, but I would not recommend vaping any vanilla flavor that is made from crushed or blended whole beans, even if filtered. Simple ethanol extraction is probably the best for vanilla.