Ключевые слова: betula, beverage, birch, bottle, collecting, drilling, drink, dripping, droplets, fermenting, food, forest, fresh, gathering, glass, harvest, healthy, hole, jar, juice, natural, nature, organic, outdoor, outdoors, park, plastic, raw, reused, sap, season, spring, sugar, sweetener, tapped, traditional, tree, trunk, tube, water, wood,