Add yeast and honey to warm water in a large bowl. When it bubbles, add salt, whole wheat flour, onion, and enough white flour to make a soft dough. Knead till smooth and elastic. Let rise till doubled, about an hour. Punch down, and divide into 16 equal pieces. Roll each into a long bread- stick shape and place on a baking sheet sprayed with Pam (or the like). (You'll need two large baking sheets to hold the breadsticks. Let rise till light, about 1/2 hour. Brush with egg white and sprinkle with seeds or coarse salt. Put a pan of hot water on the floor of your oven. (This helps make a crisp crust.) Bake in preheated 400 F oven for about 20 minutes.
If you make these in advance, reheat briefly in a hot oven before serving. You can add other herbs such as dill, parsley, basil, whatever, if you like