Slice cabbage into quarters and remove core. Split each quarter into 2 layers to make it easier to slice. Flatten each out and slice into thin strips, then chop across for smaller chunks. Measure as you go and use no more than 8 cups. Save any extra for other purposes.
Core the green tomatoes and then dice. Measure out 6 cups. (I've used large green ones in one batch and green cherry tomatoes at the end of the season for my second batch..) The cherry tomatoes were not cored, but diced into 8ths or quarters if they were really small.
Dice 4 cups of Vidalia(sweet onions).
Slice off top and bottom of bell peppers, making sure seeds and other membranes are removed. I then cut each middle section in half(top-down). Proceed by slicing into small strips, then dice to measure amounts required.
Cut stem from jalapeno, slice lengthwise and remove seeds. Cut each half into thin strips, then finely dice. Chop further if you want bits smaller. If the jalapenos are small, you may need 2.