Is there sugarcane or sugar refining?

Sure is! Its a little bit limited in scope right now, but I'll expand on it over time.

Gourmet expansion - new food types, like bread.
bread could fill less but is not raw, like flour. maybe .20 nutrition instead of .25?
cookies, of course. chocolate and flour.
sandwiches requiring bread and including vegetobles.
trying to figure out uses for flour.
rice balls - like bread, but different meals. easy to refine the rice you get en masse every harvest.
tomato sauce - refined tomatoes, no raw penalty but an "uncommon ingredient" buff!
quality tomato sauce (or regular) could include sugar and give a "rare ingredient" buff, including raw. (trust me, tomato sauce & sugar is pretty good. super sweet and tasty)

Hey man great work with the mod, expands it just the right amount.

Just a thought if it's not already in but maybe the canned good should give a portion of the steel back instead of being just consumed so it has a recycling element to it so the player can choose between short term metal loss for long term food storage or vice versa.

On that note possibly allowing use of plasteel or another metal? So say normal canned goods take 2 steel and return 1 on consume (or just take 1 and return 1) and have the lower current nutrition of .25, and say using a more complex / refined metal gives full nutrition benefits of .5 as it's a cleaner and better container. (Think back to early canned goods, the welding process involved lead and heavy metals so people often died long term).

How can I help with the Brazilian Portuguese translation?

@Welnorr Not a bad idea! Making one now

Perhaps add another use for flour other than a waste of time, like bread or sandwiches?

add more bulk recipes