In a 100 grams of maple syrup provides 260 calories and is composed of 32% water and 67% carbohydrates (90% of which are sugars).
Storing Maple Syrup
Pure Maine maple syrup contains no preservatives and should be refrigerated or kept in a cool dry place after the seal is broken. Properly prepared maple syrup will not freeze, and the freezer makes an ideal storage place.
It also may be heated to 180 degrees and canned in sterilized jars. Process pints in boiling water for 10 minutes.