You adore prosciutto di Parma. You’ve tasted jamón Iberico.  But have you heard of French jambon de Bayonne? It makes up the third star in the trinity of exquisite single-origin dry-cured hams from Europe. Christine Chesanek, owner of Fromage Fine Foods in Old Saybrook, Connecticut brought some into her shop for me.  (She sliced the ham for the plate of jambon de bayonne pictured here into translucent pieces.) It’s is made by Delpeyrat, which has been