Complex sentence: Additional ingredients can include shallots, olive oil, chicken stock and vermouth, and in addition to tarragon, additional spices and seasonings can include marjoram, thyme, bay leaf salt and pepper.
Split into simpler sentences: Additional ingredients can include shallots, olive oil, chicken stock and vermouth. In addition to tarragon, additional spices and seasonings can include marjoram, thyme, bay leaf salt and pepper.