You just need to have Glaze table and Crude oil equipment.
Don't use kitchen range for cooking because it means 3 times more wood for cooking.
So you need 1 wood collector to work for u once in a while to collect woods too.^^
Mostly training spots are dropping food which you can cook for train. This way you will earn the food you need and same time wont waste time of your alts with making syrups or trying to get money for syrups. They will get some xp too so they can level themselves or pets.
Like the lowest where you can put your alts in south island starfishes (for lvl 10-20). They drop EEL (hp sp 195 when you cook it).
Next place for good sp food is Pine forest. (for level 17 - 30) . The vine grass story. I bet everyone know it. Collecting vine grass and recycling it into straw mushroom. Then compound it with vine or turpentine and get tomato juice.
Next you can put ur char on train in Olsya (level 43-53)where you can get all kind of meats for sp and hp and cook it. You even will have extra for sale on shop. People always buy food so don't think its a bad business. Also there is starfish spot where you can collect different types of fishes (for level 20-30). And the normal rank 1 fish is a bit useless in primary you can compound it with anything rank 1 (for example fish + muck or fish + fish) and you will get higher rank better fish for cook.
Next spot in my mind is Korea - crabs. (lvl 45-54)They drop higher rank fishes and that mean they got higher sp and hp. There is Yellow croakers, cuttlefish, octopus.
After that the favourite spot for everyone is south poleb(lvl 54 - 71). Because of the theeth. There also get fish as drop - salmon and cod and wolf meat. Those cods and salmons are good as hp and sp food too. So don't drop them!
Next place i go train was Korea again (lvl 63-71). Gynseng monsters - they dop gynseng, small gynseng, gyrophora and great gynseng. They are like 80-120 sp and great gynseng is pretty rare but gives 400 sp. You can cook only the great one into high sp things (600-900 sp) and rest is good to eat directly. When i was in that spot i was not bursting any char so all sp i get i was sending to friends and guildmates which are still bursting and they save a lot of syrups.
Next place i went was DS cave. (lvl 71 - 77) There have no such nice drops but it was next step on my pet training. On mains and alts i follow the same training spot path ^^. There the only thing you can cook is the carrot. Wich gives 100 sp. Still usefull for bursting.
After that is Egypt ( lvl 77-91)- critical weapon place. there got mummies and scorpios. Max mummy level was 95-96 if im not mistaken. They drop wine - 120 sp. And is good for burst again. But the problem on this spot is there is battles spawn many mobs or they start with 8 mobs sometiems. So it is not good spot for people who train without eremote. Just avoid that place.
Other higher level spots for food are Owls in hanging garden (drop pork), leopards (drop almost every kind of meat), Relic isle laternfishes (drop fishes) and sharks (drop salmon, fugu and tuna).
There are sure many other spot that i didn't mentioned. I just wrote those that i used and liked as training spot.
Also you can always ask your friends for the food they drop. Because there is always many people who drop food - because they don't need it.
