1) go to anna's taqueria (multiple locations around boston)
2) order a burrito to go
3) do not eat it immediately
credit dan4th
4) reheat later in microwave
credit bwalsh
5) have transcendent experience
I suspect the magic is in the additional time stewing in its own juices, letting the flavors meld (don't forget hot sauce and guac). then the additional heating allows the cheese to distribute itself. it is so good.