All natural. A gluten free product. 1 envelope dry yeast (1/4 oz) = 2 1/4 teaspoons = 1 cake fresh yeast (0.6 oz). Product of Canada. General Tips: (1) Gauge liquid temperature with thermometer, (2) Spoon flour into dry ingredient measuring cup; level off. To Dissolve: Stir 1 envelope contents into 1/4 cup warm water (100 to 110 degrees F). To proof (foam) yeast, stir in 1 teaspoon sugar; let stand 10 minutes. If mixture doubles in volume, yeast is active. To Rise: Set covered dough in warm place (80 to 85 degrees F) or place pan of covered dough on rack over pan of very hot water. Manufacturer: ACH Food Companies, Inc. Address: Memphis, TN 38016Phone: 800-777-4959