Tarragon - Go for fresh-looking leaves, with no discolouration or wilting. French tarragon is considered to be the best - its flavour is more subtle than the coarser Russian tarragon. Dried tarragon is also available. A better substitute for French tarragon is Spanish tarragon (Tagetes lucida), also known as Mexican mint marigold, Mexican tarragon. The dried plant is burnt as an incense and to repel insects
Birch (Betula pendula) Birch leaves offer a hint of bitterness that will make your whole body fully awake. Don't let the bitterness hold you back from trying it though : it's not overwhelming, and such a boost for your health! Dry the leaves for a herbal tea (you can combine it with more aromatic herbs from the mint family if you're not the biggest fan of bitter) or eat it in salads, in small amounts, mixed with other greens. It will probably remind you of radicchio.
Chocolate Mint Plant: This amazing leaf can be added to brownies, cakes and ice creams and even cocktails. You can even steep it in a cup of hot water to get the chocolate mint flavor and aroma without the sugar.