The sap is clear, it has a really high water content. I've been told that when you boil it down to get the syrup it could be up to a 40/1 ratio. Length of tapping depends on the weather. It has to get above freezing during the day and below at night. It could be as much as 3-4 weeks or as little as 1. Again this is my 1st year so I'm still learning.