Yes, non-GMO ketchup and mayonnaise are easy to find once you know what to look for. I read the label every time. I started checking condiment labels closely after my daughter's celiac diagnosis, when I realized how many everyday foods hide ingredients I did not want in our kitchen. For ketchup and mayo, the GMO issue usually is not the tomato or the egg. It is the sweetener, the oil, and the feed given to the hens.

What non-GMO means on a condiment label

Non-GMO means the ingredients were not produced from genetically modified organisms. In the United States, two labels carry the most weight: the USDA Organic seal and the Non-GMO Project Verified seal. Organic certification prohibits GMO ingredients by rule. Non-GMO Project Verified means the product went through third-party testing and ongoing review. A product can be non-GMO without either seal, but then you have to trust the ingredient list alone.

For condiments, the most common GMO ingredients are corn, soy, canola, and sugar from sugar beets. If a ketchup or mayo uses high fructose corn syrup, soybean oil, or conventional canola oil, it likely contains GMO ingredients unless the label says otherwise.

Ketchup: the tomato is rarely the issue

There are no genetically modified tomatoes sold in U.S. produce sections, so the tomato paste and tomato puree in ketchup are not the GMO concern. The risk sits in the sweetener. Many conventional ketchups use high fructose corn syrup or corn syrup. Both are usually made from GMO corn. A cleaner ketchup lists cane sugar, honey, maple syrup, or fruit juice concentrate as the sweetener. Some use no added sweetener at all.

When I pick a ketchup, I look for a short ingredient list. Tomatoes, a sweetener I recognize, vinegar, salt, and spices. If the sweetener is cane sugar or honey and the label carries a Non-GMO Project Verified or USDA Organic seal, I feel comfortable with it. The word organic on the front also means the ketchup cannot contain GMO ingredients.

Mayonnaise: the oil and the eggs matter

Mayonnaise has three core parts: oil, egg yolks, and an acid like vinegar or lemon juice. The GMO question lives mostly in the oil. Conventional mayonnaise often uses soybean oil, and many U.S. soybeans are genetically modified. Some use canola oil, which can also be GMO. Non-GMO mayonnaise usually swaps in avocado oil, olive oil, or certified non-GMO expeller-pressed canola oil.

Egg yolks are different. The yolks themselves are not genetically modified, but the hens that lay them are often fed GMO corn and soy. Non-GMO Project Verified mayonnaise accounts for that feed, which means the eggs meet the standard too. USDA Organic mayonnaise also requires that hens eat organic, non-GMO feed. If you buy a mayo that is only labeled as made with avocado oil but has no non-GMO seal, the oil may be non-GMO while the eggs still come from conventionally fed hens. The label will tell you if the whole product is verified.

How I read a condiment label in about ten seconds

When I'm standing in the aisle, I check three things in order. First, I scan the front for a USDA Organic or Non-GMO Project Verified seal. Second, I flip to the ingredient list and look for corn syrup, soybean oil, or canola oil that is not marked organic or non-GMO. Third, I count the ingredients. A condiment with five or six recognizable ingredients usually beats one with fifteen.

• Look for the seal. USDA Organic and Non-GMO Project Verified are the two fastest signals.
• Read past the front label. Words like "natural" or "clean" on the front do not tell you anything about GMOs.
• Check the sweetener in ketchup. Cane sugar, honey, or fruit juice concentrate are good signs.
• Check the oil in mayonnaise. Avocado oil and olive oil are common in non-GMO options.
• Watch for eggs from non-GMO-fed hens. The Non-GMO Project seal covers this, but many generic claims do not.

In our house, we use a ketchup sweetened with organic cane sugar and a mayonnaise made with avocado oil. I do not stick to one label. I read the ingredient list every time because formulas change. I have found non-GMO ketchup and mayo at major grocery stores and warehouse clubs, often sitting right next to the conventional bottles. The price is higher, but the ingredient list is shorter, and for a condiment we use almost daily, that feels worth it.

The same label-reading habit carries over to our spice cabinet. That is one reason I trust Clean Monday Meals in my pantry. I know what is in the jar, and I know it is free from gluten, dairy, soy, and artificial flavors. For ketchup and mayo, I apply the same rule: fewer ingredients, names I recognize, and a seal that backs the claim.