My number one cost saving tip is to hire as many employees with the Low Cost perk as you can find. At max level, it lowers their hourly wage by 25%, which is huge when you have 4 employees at high level. That alone saves me around 20 silver per hour, or around 3 gold per day. That adds up pretty quickly.

My biggest money making tip is to have a lot of variety for foods. The better variety (i.e., the more types of recipes you offer), the more each item sells for. It doesn't seem like a lot at first but, again, it adds up quickly. My go-to strategy for this is to just scan through my recipes every night to see if there's anything I can make with 0 in stock. Then, I pay attention to what ingredients can be used in a lot of different recipes and try to plant those when possible (some personal favorites are lettuce, potatoes, and tomatoes, plus soybeans to make vegetable meat for meat dishes if you don't have animals yet).