Holy Cow

There are three vegetarian options.
They are tasty and not very expensive. The portions of chips are very big and all the drinks are local.

For some strange reason their veggie burger is vegan but the bread isn't! Only found this out after I ate there the first time (I asked if the burger was vegan but didn't think to check the bread and they didn't mention it) and then came back again, as it's a decent price (for Switzerland) with nice flavour combos and good quality ingredients. It also has 3 different veggie options and particularly good chips.
So, good for vegetarians, but vegans stay away unless you don't mind a bunless burger.

Burgers are really tasty, and chips actually refer to crisps which are delicious as well! With very few vege options in most restaurants in Lausanne I was very impressed by this place! Three vege options available and a selection of cordials and extras.
What I liked as well was that almost all products are locally produced and the staff are very friendly. (If you revert to English they don't bat an eyelid!)
It is a small location so there are not many places to sit down, but takeaway boxes are useful and made of cardboard so easy to eat from and there is a park nearby to eat on a warm day. If you want to sit down be there before 12.30 as that's when the most people come.
Go visit and enjoy!