I’ve made about 3 quarts and counting…and use the exact same glass bottles. I have two taps in one big tree and it gives me all the sap I can possibly handle without an actual evaporator. I use a turkey fryer in my garage. My syrup is very light early in the year and gets darker over the course of the season. I live at 1900 feet elevation, so mine finishes at around 216. It’s a fun hobby.