Squash caviar with mayonnaise in a slow cooker for winter

1. Cut the onion into small cubes, I sometimes chop it with a blender.
2. Put the prepared onion, tomato paste in the vegetable oil heated in the bowl of the slow cooker, add salt, sugar and pepper, cook on the "STEWING" mode for 20 minutes, stirring occasionally.
3. Peel and wash the zucchini. Grind with a blender or a meat grinder.
4. Combine the zucchini with mayonnaise and mix. Cook on the "STEWING" mode for 2 hours.
5. 40 minutes before the end of cooking, add the previously prepared tomato and onion mixture. Mix well and cook until the end of the program.
6. Put the finished caviar in sterile jars, close the lids, let it cool in the heat.

Bon appetit!