Considering the Egido Via Lusitana in Madrid?
A VT member wrote the following comment about visiting Madrid:
Pick your own crisps! by chrisdScotland
While making my way to the metro at La Latina, a few doors from the indoor market, I found a small shop selling crisps (home-made I presume) The lady was very nice, so were the crisps. I know the area itself isn't that salubrious but give the place a go if you find yourself passing the door.