Modified from a recipe on BalancedBites website
This was taken in part from a recipe on Diane Sanfilippo's website, and modified a bit in both ingredients and the process. It's still a bit of an in-the-works project, as it is a bit thicker than I like my ketchup -- but the flavor is to die for!
1 small onion, diced
2 apples, peeled and diced
2 cloves garlic, minced
1/2 teaspoon sea salt
1/4 teaspoon allspice
1/4 teaspoon cinnamon
2 pinches of cloves
1/4 teaspoon ginger
1 pitted Medjool date
2 Tbsp apple cider vinegar (next time: 2.5 Tbsp, see note below)
1/4 cup water (next time: 2/3 cup, see note below)
6 oz tomato sauce
Place all ingredients into a slow cooker and stir to combine. Set the slow cooker to low and cook for 4 hours. I have a small crockpot (2 quart) that I use for making my own Ghee and for individual portions of food items, so I used my small crockpot.
After 4 hours, remove the crockpot from the heating element and let it cool just a bit and then put in your food processor or blender. Be sure not to fill your blender too full, as warm items tend to expand. Blend until smooth.
Since this is fairly chunky to begin with, what I did was I put it in my larger Ninja and blended the heck out of it, then transferred to my smaller one and blended until I thought it was ready, and then kept blending.
This was still fairly thick, and I'm thinking that it was because my small crockpot runs a bit on the warm side, so next time I will increase the water from the original 1/4 cup the recipe calls for, to 2/3 cup, and also add 1/2 Tbsp extra apple cider vinegar, possibly at the very end of the cooking process for the extra being added. Another option is to cook less time, thereby keeping more of the water in the crockpot and not evaporating as much.
Once blended, place the ketchup into glass containers and allow it to come to room temperature before refrigerating.