Green tomato relish 2

1. * fresh red sweet pepper should be finely chopped.
2. wash and core the tomatoes; peel the onions.
3. Slice the tomatoes and onions thinly, mix with the salt and let stand overnight.
4. In the morning drain thoroughly.
5. Put the tomatoes and onions in a large kettle and add the lemon slices, pepper, sugar, vinegar, and the spices and mustard tied in a bag. Bring to a boil and cook for about 30 minutes or until slightly thickened, stirring occasionally.
6. Discard the spice bag and turn the relish into hot jars.
7. Seal at once.
8. Makes 4 quarts.