Black bean and potato tacos. ¡Órale!

Hey there, a real post with food!
I don't know where this idea comes from.  It's probably not original but I've been wanting to do it for a while.  Part of the reasoning is that ever since I became a vegetarian, potatoes took on a totally new role for me, almost even replacing meat.  Don't ask me how, but they can be really satisfying. 
There's no standard recipe for what I did here, but hopefully I'll have something slightly more specific in the future once this is perfected.  So yeah, this isn't a recipe per se, but I'll give some tips as to how to make these (I'm hearing the voice of Donald Kaufman in Adpatation - "Not rules, Charlie, principles"). 

Step one: beans
I start out with my standard bean recipe which I will make forever and ever.  I love it.  It's the basis for refried beans, chili, you name it. 
2 cups of black beans, rinsed, picked through.
1 onion, quartered
3 garlic cloves, sliced
1 bay leave

Put all ingredients into a large pot.  Add 8 cups water and one bottle of beer.  I had some skunky beer lying around which did me just fine.  Bring to boil and then put to a low simmer for about 5 hours.

Step two: potato.  In the meantime, cook a potato.  My microwave potatoes generally end up like shriveled little lumps but it turns out the microwave actually has a potato function.  Who knew?  Anyway, you want a cooked potato.  Get there however you like.

Step three:  Refried beans.  Whenever you have beans that you are ready to work with, take a good three cups of beans and add a cup of broth.  I like better than bouillon beef, but be sparing with the flavor (a scant teaspoon can go a long way).  Mash over the stove and cook on a low heat until liquid has been absorbed.  Season with salt, pepper, oregano, and something spicy (I used powdered chipotle).  Okay, how is chipotle not in bloggers spell-check?  Come on...

Step four: Saute potato and mix everything.  When the potato is cool, cube it, and then saute it in butter seasoning with salt, pepper and oregano.  Mix it well into beans.  The mixture should be thick and stick together pretty well.  

We garnished our tacos (soft shells with corn tortillas heated on the comal), with salsa, vegan sour cream, and avocado.  Pretty awesome. 

Queue mariachi song end 'duh-duh-DUH, duh-duh'.