useful tips to be able to keep your herbs in winter. Olive oil basil, fennel, garlic, cayenne pepper, rosemary, thyme and tarragon. Sunflower Oil: basil, rosemary, tarragon and thyme. Rapeseed oil: basil, garlic, rosemary and thyme I took a risk and in my herb oil is: sunflower oil, tarragon, thyme, rosemary, garlic, pink peppercorns, 1 dried chili, and zest of 1/2 organic lemon. You can also make herb butter, roll into a sausage and freeze. You then cut off just what you need.