Out and about on a gloriously sunny day, I stopped at Darwin’s Ltd., a cramped yet cozy space in Harvard Square. The lines were long, our stomachs were grumbling, and yet the wait was so worth it. Breakfast sandwiches are served until 3PM on weekends, and while they looked delicious, I opted for The Hubbard Park sandwich on 7-grain bread. Slices of avocado, carrot, tomato and sprouts contrasted the sweet apple and spice of honey mustard. Add cheddar cheese for even more taste bud wildness.