This sadly is not my grandma's recipe; I wish I had gotten it from her when she was alive. However, I ran across this one and it has so many of the same ingredients in it I decided to give it a try, quite a few years ago. My family and I really love it.
1COMBINE tomatoes, onions, green and red peppers, vinegar, brown sugar, garlic, horseradish, if using, celery salt, mustard seeds and salt in a large stainless steel saucepan. Bring to a boil over high heat, stirring frequently. Reduce heat and boil gently, stirring occasionally, for 1-1/2 hours, until sauce begins to thicken. Add allspice, mace, cinnamon and cloves. Continue to boil gently, stirring occasionally, until thickened and sauce begins to mound on a spoon, about 30 minutes
2PREPARE boiling water canner. Heat jars in simmering water until ready for use. Do not boil. Wash lids in warm soapy water and set bands aside.
3LADLE the hot chili sauce into hot jars, leaving 1/2 inch headspace. Remove air bubbles and adjust headspace, if necessary, by adding hot sauce. Wipe rim. Center lid on jar. Apply band until fit is fingertip tight.
4PROCESS jars in a boiling water canner for 20 minutes, adjusting for altitude. Remove jars and cool. Check lids for seal after 24 hours. Lid should not flex up and down when center is pressed.