Add 'grams' option for extras#187

Please add the option to use grams for Extras in the recipes for items like brewing salts. Teaspoon and tablespoon are not accurate enough. Thanks!

I agree, this is a definite need. Measuring in oz. Is not accurate enough when trying to balance out your water profile. Would like option to use grams in this section but oz & lb thtoughout the rest of the recipe.

Totally agree on this one. Everyone I know uses grams who brews in 5 gal batches.