Walnut Ketchup Recipe How to Make Walnut Ketchup | Hank Shaw (2024)

Home | British | Classic Walnut Ketchup

4.84 from 6 votes

By Hank Shaw

June 15, 2015 | Updated June 06, 2022

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Walnut Ketchup Recipe How to Make Walnut Ketchup | Hank Shaw (2)

Squirrels love walnuts. So to be a walnut tree, you either need to be fortunate enough to grow where there are no squirrels, or be strong enough to push out lots and lots and lots of walnuts, so the squirrels and jays and yes, people, can have their share. In fact, these virile trees push out so many little nuts that they factor in loss — to not strip some off in springtime stunts those that remain.

That’s where we come in. There are several things you can do with unripe walnuts. My favorite is pickled walnuts. The French and Italians make a liqueur from unripe walnuts, too. And the English make a wonderful sauce from them called walnut ketchup.

This unusual condiment seems to have originated in 1700s Britain, and the word ketchup is either from Chinese or Southeast Asian origin. Back then there were lots of ketchups, and only later did tomato win the tournament as the One True Ketchup. One of the old ketchups was this walnut ketchup.

Walnut Ketchup Recipe How to Make Walnut Ketchup | Hank Shaw (3)

My recipe is an amalgam of one from 1808 and one from Gourmet magazine from 1948. Basically you mash unripe walnuts, let them steep in vinegar for a week or more, then boil everything with wine, spicy things, anchovies and onion, strain and bottle. Anchovies? Yeah, sounds gnarly. But it isn’t. The sauce isn’t fishy at all, and the anchovies add a savory note to the sauce.

What, then, does walnut ketchup taste like? It’s very sharp, as you might guess from all that vinegar, but beyond the acidity, it tastes like a combination of Worcestershire and A1 Steak sauce. I am not kidding. It really is a dead ringer for A1, but is thin like Worcestershire.

Walnut Ketchup Recipe How to Make Walnut Ketchup | Hank Shaw (4)

Nowadays there’s no reason not to use this sauce right away. But back in the day, cooks would put up this sauce and store it for at least a year before serving. It needs time to mellow, like wine. Take this note, from Maria Eliza Ketelby Rundell, in her book A New System of Domestic Cooking (1808): “It will keep 20 years in the greatest perfection, but it is not fit for use the first year.”

My advice: Go ahead and use some when you make it. But I can tell you that it really does mellow well after a year. I can’t speak for 20.

4.84 from 6 votes

Walnut Ketchup

I used unripe black walnuts for this recipe, but any unripe walnut will do. Ideally they are young enough to jam a knife all the way through, but you can even use slightly older nuts where the inner shell of the nut itself is starting to form. Keep in mind this is not as thick as tomato ketchup. It's more like a Worcestershire sauce, but it tastes more like A1. Use this as a marinade or splash it on any sort of red meat -- beef, venison, duck, goose, hare, etc.

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Course: Condiment, Sauce

Cuisine: British

Servings: 6 cups

Author: Hank Shaw

Prep Time: 20 minutes minutes

Cook Time: 45 minutes minutes

Total Time: 1 hour hour 5 minutes minutes

Ingredients

  • About 50 green walnuts
  • 3 tablespoons kosher salt
  • 1 12- ounce bottle malt vinegar
  • 3 to 4 cups cider vinegar
  • 2 ounces of anchovies, rinsed well
  • 1 large onion, chopped
  • 1 cup red wine or Port
  • 1 teaspoon ground nutmeg
  • 2 teaspoons ground black pepper
  • 1 teaspoon cayenne
  • 1/4 cup chopped or grated horseradish
  • A 1-inch piece of ginger, unpeeled and sliced thin
  • 1/2 teaspoon xanthan gum (optional)

Instructions

  • Crush, chop, crack or grind your walnuts. Remember this is a messy job and the liquid will stain, so your method should reflect that. I wear gloves and a ratty long-sleeved shirt and chopmy walnuts small with a stainless steel knife on a dark-stained cutting board, This minimizes the staining.

  • Put the walnuts in a large glass or other non-reactive container and cover with the two vinegars. I find it makes a better walnut ketchup with only malt vinegar, but as this can get expensive, you can make do with some malt vinegar balanced with some cider vinegar. Just barely cover the walnuts with the vinegar. Put the lid on the container and let this sit at room temperature for 8 days.

  • After 8 days, move the walnuts and vinegar into a large, non-reactive pot and add the remaining ingredients. Boil gently for 45 minutes, then strain through a fine-mesh sieve to separate the solids. As an extra step, you can wait until the sauce cools and then buzz the sauce in a blender with the xanthan gum; this will keep the very fine solids suspended in the ketchup and give you a sauce with more body.

  • Bottle the sauce and keep it in a cool, dark place indefinitely.

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe? Tag me today!Mention @huntgathercook or tag #hankshaw!

Categorized as:
British, Featured, Foraging, Recipe

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About Hank Shaw

Hey there. Welcome to Hunter Angler Gardener Cook, the internet’s largest source of recipes and know-how for wild foods. I am a chef, author, and yes, hunter, angler, gardener, forager and cook. Follow me on Instagram and on Facebook.

Read More About Me

Walnut Ketchup Recipe How to Make Walnut Ketchup | Hank Shaw (2024)

FAQs

When to harvest green walnuts? ›

They're ready for picking when the green walnut is about the size of an average apricot and it should be easy to cut through. You can still make nocino when it's slightly difficult to cut through, but you get a better flavour profile when the inner shell is soft and just beginning to form.

What do you do with tomato ketchup? ›

Stir into soups and stews as a rich, tomatoey base. Mix in a pinch of curry powder for curried ketchup, the perfect partner for fish and chips! For Smokey baked beans, add a spoonful of Ketchup and Barbeque Sauce. Mix together equal measures of Tomato Ketchup and Real Mayonnaise for a fuss-free co*cktail sauce!

When to use ketchup? ›

Its sweet, tangy flavor is the perfect counterbalance for salty meats, the primary reason it's a staple on just about every hamburger and hot dog cart in America. But that's just the beginning. Ketchup can be used as a sweet glaze or add a kick of flavor to scalloped potatoes, deviled eggs, or meatloaf.

Should you pick walnuts or let them fall? ›

Depending on when you pick your walnuts (September through to October here in Provence) you'll find the husks surrounding the shells either green or dried out and black/ brown. It's best to pick up the walnuts as quickly as they fall to discourage mold growth.

Can you eat walnuts straight from the tree? ›

Wondering if you can eat a black walnut from a tree in your yard or foraged from the woods? The answer is yes, but first you need to know how to harvest black walnuts and crack their tough shells. Use these simple harvesting tips so you can enjoy these native nuts as a snack or as a flavorful addition to baked goods.

Is it cheaper to make your own ketchup? ›

The homemade version, on the other hand, is cheaper and all about natural flavouring, ingredients and spices. It really takes very little effort to make and tastes so much better than supermarket ones. Some pretty good reasons to choose to make homemade ketchup over buying it!

How long does homemade ketchup last? ›

Pack and Store Your Homemade Ketchup

Ketchup will keep 3 weeks in the fridge or 6 months in the freezer. Ketchup can also be water bath canned using the hot pack method. Leave 1/4” headspace and process the 1/2 pint jars for 15 minutes.

What does ketchup and baking soda do? ›

The ketchup contains vinegar, which is dilute acetic acid. The acetic acid reacts with the baking soda to produce carbon dioxide gas. The gas bubbles expand and rise through the liquid, bubbling out the ketchup. II.

Is it OK to eat tomato ketchup everyday? ›

For most people, ketchup proves perfectly safe when consumed in moderation. The condiment can easily be included in your well-balanced diet. Still, eating too much ketchup may cause you mild side effects.

What medicine was tomato ketchup used for? ›

Ketchup was used as medicine

In the 1830s, tomato ketchup used to be sold as a medicine, claiming to cure ailments like diarrhoea, indigestion, and jaundice. The idea was first proposed by Dr. John Cook Bennett, an American physician, in 1834, who is said to sell the recipe later in form of 'tomato pills'.

Is tomato ketchup a junk food? ›

Tomato ketchup contains too much of sugar and preservatives, which can increase body fat that in turn increases obesity. You will be surprised to know that consuming too much of tomato ketchup can also reduce the insulin in the body.

Why do they say not to put ketchup in the refrigerator? ›

Despite Heinz' stance, the United States Department of Agriculture says shelf-stable foods like ketchup do not require refrigeration. However, doing so "may decrease in freshness and quality (texture and color) if eaten months or years past the expiration date."

What is the rule for ketchup? ›

The "catch-up" rule is a concept that allows reserved category candidates who are promoted later to regain their seniority over general category candidates who were promoted earlier.

When should you throw out ketchup? ›

After opening condiments, you can refrigerate them for the following times: ketchup, co*cktail or chili sauce 6 months. chutney, 1 to 2 months. horseradish, 3 to 4 months.

Can you eat fresh green walnuts? ›

Fresh green walnuts, on the other hand, offer a taste that few have enjoyed, the primary reason being that they are incredibly bitter. Fortunately, we can use simple processes to remove the tannins from these acrid green gems and transform them into something dark, deeply flavored, and refined.

How do you cut green walnuts? ›

They're tough and if you're not careful, the knife can slip. I use a cleaver, tap it into the skin of the green walnut, then lift the cleaver and whack it down on the cutting board to split it, keeping my other hand well out of the way. Note that each batch of liqueur de noix will be different.

What to do with fallen green walnuts? ›

Then you can either pickle them or preserve them in syrup. Pickled walnuts are, for me, interesting at best, but I love the spicy, syrupy, chewy preserves, especially for the way the peeled green fruits take on the brain-like shape of mature, hulled walnuts.

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