I really enjoyed playing your game and love the art! I will not repeat stuff that have been already pointed out but what I would like to see is some kind of tutorial, even something simple like slides explaining some of the mechanics, think more like a primer to ease the player into the game. I figured stuff out eventually by playing and reading through the skill tree but it still would be nice.
On the balancing front I think that stuff like ingredients should probably be cheaper but not by that much. I feel that a possible issue is that the player will not necessarily understand that getting the income upgrades early on is the way to go. It made sense to me at the time and by getting a lot of them it let me unlock other stuff easily but they are not really that exciting upgrades so players might avoid them. As a suggestion I could see a rework to the skill tree where the player will be "forced" to get adequate income upgrades before being able to unlock other more exciting upgrades like new glasses, ingredients etc. Another option is to make income upgrades come through gameplay instead of the skill tree, something like the already implemented upgrade system of the glasses but not tied to the glasses.
In any case this is a great entry and I'll definitely return to play this again. Great job!