Tammy's cooking is good . Tammy is a good cook. Tammy fait bien la cuisine. Tammy cooks well . Tammy lit la recette bien attentivement.
Tammy reads the recipe very attentively.
Tammy is a better cook than Fiona. Tammy's cakes are better than Fiona's cakes. But yes, Tammy cooks better than Fiona. And Tammy's soup is better seasoned than Fiona's soup. The adverb bien is an intensifier and can be translatied as 'much' in English.