For Nightshade free, try this spice blend:
3 Tbsp white distilled vinegar
1 Tbsp cocoa powder
1 Tbsp plus 1 tsp ground cumin
1 tsp ground coriander
1 tsp dried oregano
1 tsp salt
1 ½ tsp ground white pepper
very generous grind of black pepper
3 Tbsp prepared horseradish
And sub the one tomato for a beet and/or carrot