Is It Safe To Can Yellow Tomatoes?
I have heard that question several times in the last few weeks. We all “know” that yellow tomatoes are lower in acid so are they still safe to can? Not true!!!
Yellow and orange tomatoes have just as much acid as red tomatoes.
Well, for the most part at least. In terms of acidity or Ph, yellow tomatoes are about average. Some cultivars have more some less. Bottom line is that all tomatoes are safe to can- as long as you acidify them.
Acidity and Tomatoes
Tomatoes must be acidified before canning. When canning either whole, crushed or juiced tomatoes you must add either 2 T. bottled lemon juice per quart or 1/2 t. citric acid . For pint use 1 T. lemon juice or 1/4 t. citric acid. You can also use 4 T. (5%) vinegar per quart, but it will alter the flavor and is not recommended. You can add a little sugar to offset the flavor, if you like.
Canning Tomatoes
Certainly one of the most popular products to can each year here are a couple of recipes to start you off.
Crushed Tomatoes
Peel and core tomatoes , trim off any bad spots and quarter. Place about 1/4 of your prepared tomatoes in the kettle and cook, stirring constantly over high heat. Use a potato masher to crush tomatoes and extract juices. Once they are boiling add remaining tomatoes, stirring constantly. You don’t need to crush these tomatoes. Bring to a boil and boil for 5 minutes. In clean, hot jars add needed acidity (see page 10). You can also add 1 teaspoon of canning salt per quart if desired. Ladle in hot tomatoes, leaving 1/2-inch headspace. Wipe jar rims clean and adjust lids. Process in boiling water bath. Pints 35 minutes, quarts, 45 minutes. 1,000-3000 ft over sea level add 5 minutes. Twenty-two pounds of tomatoes will yield about 7 quarts of tomatoes.
Whole Tomatoes in Juice
Use any extra tomatoes to make juice. I use tomatoes that are too big to can whole, or those that have blemishes that need to be trimmed. Cut up clean, unpeeled tomatoes in a kettle and cook, stirring often until tomatoes are mushy. Strain mixture, pressing on solids or run through a food mill or tomato juice extractor. Set aside,. Place peeled, whole tomatoes in kettle and add enough tomato juice to cover them. Heat to a simmer and simmer gently 5 minutes. Add lemon juice or citric acid to jars, using guide on page 10. Add salt, if desired. Add tomatoes and cover with hot juice, leaving 1/2 -inch headspace. Wipe rims and adjust lids. Process both pints and quarts 85 minutes in a boiling water bath.
