Yes, it can happen! (There is one in London - hopefully one day there will be in Germany as well).
The hardest thing to do is the wonderful rice. I usually make the vegetarian burrito, but occasionally will cook up some chicken or beef for hubby. Usually with some jalapeno seasoning. When I have time, I make the guacamole from scratch as well (I will post that recipe later). Otherwise just slice up some avocado or use the Betty Bossi pre-made guacamole. Under no circumstances use the Old El Paso kind. Everything else of theirs is good, but if you are a guac fan you will be very disappointed.
2 cups basmati rice
1 small or 1/2 a large Bay leaf
1/2 -1 lime
1/2 tsp salt (sea salt if you have it)
1 package cilantro (koriander) chopped up from Migros or Coop
1/4 c soy oil (I used sunflower - sonnenblumen)
Put the rice in a pot and add enough water to cover (I put my finger in the water and when it comes to my first knuckle - from the top of the rice - it's right).
Put the bay leaf in. Bring to a boil on high heat and then reduce to the lowest setting. cook 15-20 minutes until the water is gone.
Remove the bay leaf
Add 1/2 tsp of salt - more or less depending on taste.
Add 1/4 cup of oil
squeeze juice of 1/2 a lime and 1/2 a lemon (again, depending on taste)
Add the chopped up cilantro - I use the whole packet that you buy from Coop or Migros
Mix with a fork and fluff the rice. Put the top back on and let it sit for at least 10 minutes.
For the rest:
chicken or beef if desired
homemade guacamole or sliced avocado
sour cream - sauer halbrahm
Salsa if desired
black beans (or pinto if you prefer). Black beans can be bought at El Maiz (see shopping) or Coop Sihlcity in Zurich.
Large tortillas - homemade or store bought. The mission tortillas are good (Sihlcity) or the Pancho Villa from Migros. The El Paso ones from Coop are good but smaller.
black marker (for authenticity) :) I only had a blue one.
Top with desired toppings:
Black (or pinto) beans
Roll the wrap by folding in two ends to cover the ingredients, and then roll. Place on a sheet of aluminum and roll. Mark with a "V" for vegetarian (or F for fajita, etc.) in black marker. Enjoy :)