When I told others that I found a way to easily make my own ketchup, everyone was begging for the recipe.
This recipe is simple, however it also takes all day. I cooked mine overnight, so I didn’t stir it as much as I probably should have, but it still turned out fabulously.
In addition, I will strive to put the recipe at the top of a post, because I hate scrolling through someones thoughts if all I want is the recipe. Enjoy!
Ketchup

This is a simple, easy ketchup that tastes quite similar to store bought ketchup. My husband James has even agreed to use this ketchup instead of Heinz ketchup (which is huge as he is very particular about what he eats).
Ingredients
2 (28 oz) cans peeled ground tomatoes*
1/2 cup water
2/3 cup white sugar
3/4 cup vinegar**
1 tsp onion powder
1/2 tsp garlic powder
1 3/4 tsp salt
1/8 tsp celery salt
1/8 tsp mustard powder
1/4 tsp finely ground black pepper
1 dash cayenne pepper (more if prefer it to be spicy)
1 whole clove
Directions
- Pour ground tomatoes into slow cooker. Add water, sugar, vinegar, onion powder, garlic powder, celery salt, mustard powder, black pepper, cayenne pepper, and whole clove; whisk to combine
- Cook on high, uncovered, until mixture is reduced by half and very thick (10-12 hr). Stir every hour or so.
- Smooth the texture of the ketchup using an immersion blender for about 20 seconds. (I just used my food processor, immersion blender will make it smoother)
- Ladle the ketchup into a fine strainer and press mixture with the back of a ladle or spoon to strain out any skin and seeds.
- Transfer the strained ketchup to a bowl. Cool completely before tasting to adjust salt, black pepper, or cayenne pepper.
*Ensure that the cans of tomatoes that you are buying are free of citric acid if you are corn free. I have only found one brand that “may contain citric acid”, so for now we are using that, but are transitioning to just using fresh tomatoes, peeled and cooking those down.
**For those that have a corn allergy it is important to avoid white vinegar; any safe vinegar will work including rice vinegar, apple cider vinegar, or coconut vinegar.
This should keep for one year in the fridge.
When we first found out about V’s corn allergy, which was through trial and error, I had no idea about how vast of an allergy it is. At first we thought she was only reacting directly to the corn itself; if something said “corn” specifically.
For those who don’t know, V not only reacts if she eats an item, but she also reacts if I eat that item and breastfeed her. I had no idea this was possible for the allergen to pass through breast milk, but it can, and it’s scary how sensitive V is to allergens that I have eaten (reacts after eating a tsp of something that says “may contain” of an allergen she is allergic to).
Not long after we “got it under control” we noticed she seemed to be getting worse after I had ketchup several days in a row. I researched, and all ketchup in Canada is free of corn syrup, so I was confused, until I discovered that white vinegar is made from corn. It was only after removing almost all corn derivatives that V has been doing much better (follow the link for the list, and try not to feel overwhelmed).
I can’t tell you enough how important it is to read the ingredients on anything that you buy in the store. Depending on how serious of an allergy, you may also be required to contact the company to discover if it is truly safe for you to eat.
Pro Tip:
If you are cooking for a friend or family with allergies, don’t get frustrated if they refuse to eat something after you spent all this time ensuring it was safe for them. Instead, before you make food, inquire to them if there is specific brands that are safe for ingredients you are cooking with.
If you are removing something from its packaging or using it in something that will stay in your kitchen for a while to come, don’t throw out said packaging until you have documented somewhere the brand and the ingredients. I have made this mistake several times and have had to donate to family or throw out the food as I don’t remember if it is safe or not, especially if new allergies or sensitivities arise.
This has been such a difficult journey, and I will continue to share more about what we have gone through and where we are going. It has gotten easier as time has moved on and we have created a new normal for our family. We don’t eat out anymore. If we do, I need to call ahead and talk to the chef directly about absolutely everything, not really sure if it is worth it. I am trying to switch to a whole foods diet. I am no where near there yet, but in time, I’m sure we will be making almost everything ourselves.
For those that are just starting on this journey, it is ok to cry, it is ok to grieve.
I have bawled over the fact I can’t just grab something to eat while I’m out.
Meals take work, everything is made from scratch or close to it.
Trial and error with allergies is so exhausting and the unknown is terrifying.
I felt like I was failing my daughter. Every time I made a mistake V would scream in pain for days, how is that fair? Am I a terrible mother? Should I just give up and switch to formula? Is the formula actually safe? What if it makes it worse?
There are days I just feel drained, exhausted, wondering what normal life looks like.
It’s not easy, but we are getting there. I now have many safe foods I can buy, I have found local farmers I can buy meats and produce from. I have my own flour mixes, homemade condiments, etc that I make.
So let me just say this. You aren’t a terrible parent for making mistakes. I have to keep telling myself this. You learn, you document, and you move forwards, knowing that you are making the life of you and/or your child better.
I invite you all to join me on this journey of learning. What should we be eating, why are allergies more prevalent, what does it mean to make something from “scratch”?
I feel your frustrations learning allergies and intolerances is so hard especially when its figuring it out for our little ones. Too many doctor tests and then having them come back negative…but seeing your child in pain every time they eat it! And then narrowing it down to which ingredients cause the pain. And all without them being able to articulate how they feel!
We have figured out for our youngest so far… no sugar, no dairy and no gluten, but there is still more bothering him and we will never stop trying to figure out how to help him eat happy.
I also make our own ketchup and its almost exactly the same as yours! But we do honey instead of sugar.
Thank you for sharing! And I hope things smooth out for you and your little one. Moma, You are doing a great job so far!
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