EDEN, Vt. – For years, Errol Tabacco was a maple sugar hobbyist. Each February, he’d tap about 100 trees on his property, haul buckets of sap to his garage and boil it into syrup for his family and friends. This year’s different: There’s gold in these here hills. Spurred by retail prices of $60 or more per gallon, maple sugar producers like Tabacco are going all out to harvest it, tapping more trees, investing in new sap lines and building new sugarhouses in hopes of cashing in.