Think of the word convert as meaning change, whether it is a person who adopts a new belief, or a changing action, such as when you convert dollars into euros. Many times we can catch a word's meaning by looking at its origins. In this case, the Latin con means around, while vertere means turn..
Maple sap runs best when it freezes at night (e.g. in the high 20-degrees Farenheit range) and then warms up above freezing the next day (in the range of 40-degrees Farenheit and hotter). If it stays warm at night and warm during the day or if it freezes at night but barely goes above freezing the next day, sap does not flow as well or hardly at all.
The longer the sap is boiled, the darker it becomes. It may take 43 or more gallons of sap to produce one gallon of syrup! Always use equipment designed for contact with food in the manufacture of maple syrup. The concentration of the sap to the right point is key to the safety and the quality during storage. Hot packing into jars. Once maple sap has been processed into maple syrup and the correct density is obtained, the syrup is ready for filtering and packing. Syrup is best filtered while it is still hot (185Â° to 190Â°F).