You can still make gold with: animals, selling fish, foraging, selling valuable stones from the mines
Generally in the first winter, I do all the stuff that I didn't have time for in the first few seasons
After the first year, I have made enough gold that I have enough to last me through winter
Mayo makers turn those eggs into more money! I usually check on my chickens first thing in the morning, grab the eggs, stick them in the Mayo machines and then by the afternoon there’s Mayo to sell. It’ll more than triple your selling price.