Finest quality. Since 1907. The world's finest flavors. Our family business has crafted the finest extracts for more than 100 years. Use and enjoy! -The Neilsens. 1/2 tsp Lemon Extract = 1 Tbs lemon juice = 1/2 tsp lemon zest. For recipes, visit www.NielsenMassey.com. Certified gluten-free.