Foaming - Question

[johnpjackson]

Is sap foaming in the evaporator a problem if it's not getting out of the pan at all? Can I just let it go on, rather than keep knocking it down with defoamer?

[bill m]

Foam will trap in steam slowing down the evaporation process.

[220 maple]

Foaming is the probably sign of bacteria, syrup will be ropey if loaded with bacteria! Just saying
Mark 220 Maple