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.
For example, in a region where the boiling point of water is 98ÂºC (or 2ÂºC below normal), the cooking temperature of the sap must also be reduced by 2ÂºC (to 102ÂºC). There is, on average a 40:1 ratio when it comes to acquiring Maple Syrup. Around 40 litres (or gallons) of maple water must be evaporated to produce 1 litre (or gallon) of syrup. Most of the water (66%) in it evaporates during this process, leaving concentrated maple syrup.