Host Julia Collin Davison goes into the test kitchen with host Bridget Lancaster to reveal the secrets to making Home-Corned Beef with Vegetables. Then, tasting expert Jack Bishop challenges Bridget to a tasting of sherry vinegar. Next, science exper... (more)t Dan Souza uncovers the science of salt diffusion and nitrites. Finally, test cook Elle Simone shows Julia how to make the ultimate Snickerdoodles.