I normally roast my tomatoes and jalapenos on the stove in batches. This time my mom gave me a tip. She said why don't you roast them in the oven. This way you can make a whole tray of them. So that's what I did.
Broil tomatoes and jalapenos till they are nice and black.
Put charred tomatoes, jalapenos, garlic, onion, and salt in blender and puree. (I remove that spot where the stem was on the tomatoe while it's inside the blender before I puree it. This way you don't have juice running all over the place.)
Adjust your garlic or salt according to your taste.
Pour into canning jars and water bath or freeze in the jar.
I always add fresh chopped cilantro when I open up a jar. I've found that it loses it's flavor when I add it prior to water bathing.
NOTE: This batch I added half jalapenos and a small can of chipotle peppers to give it that smokey flavor. It was amazing.
Mary