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Fresh birch syrup dripping off a spoon into a jar.
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4.98 from 41 votes

Birch Syrup

This is a general how-to for making Birch Syrup from Birch Sap. You can use a slow cooker OR an Instant Pot. Both methods are listed in detail above this card. I have done it both ways, and both ways work fine.
Prep Time5 days
Active Time18 hours
Yield: 1 jar

Equipment

  • slow cooker or instant pot
  • dehumidfier or exhaust fan
  • sieve or cheesecloth

Materials

  • 1 gallon Birch Sap

Instructions

  • turn on the dehumidifier or the exhaust fan
  • collect fresh birch sap
  • strain birch sap
  • heat the sap to boiling in a dutch oven OR an instant pot on sauté, refer to the directions for either method in the post itself, although it is generally the same method
  • preheat the crock pot on high if using
  • for the IP: once sap is just about to boil reduce the heat in the instant pot to high on the slow cooker mode and cook for 10-12 hours or longer as needed
  • for the slow cooker: pour the almost boiling sap into the slow cooker, put the lid on, cook it at high and turn the lid to the side so the water can escape cook for 10-12 hours or longer as needed
  • as it cooks down it will get thicker and thicker, keep checking it, your slow cooker or instant pot will be different than mine so this is where you come in a monitor it, if after 10-12 hours it's still watery keep on cooking being sure to vent it so the water can cook out
  • you can cook this overnight if needed, in fact it might be better to cook it low and slow overnight and finish it in the morning
  • once it's thick and very reduced to about 1/2 cup, it is done, remove it from the heat and put it in a jar
  • store in the fridge, use within two weeks