Boysenberry

Name: Boysenberry, a blackberry–raspberry–loganberry hybrid (Rubus ursinus hybrid, sometimes classified as a blackberry variety).

Description

The boysenberry is a large bramble fruit generally treated as a type of blackberry, though it likely descends from a cross involving blackberry, loganberry, and red raspberry. It was developed in the early 1920s by horticulturist Rudolph Boysen in Anaheim, California, who later handed his vines over to farmer Walter Knott for commercial development — the fruit went on to become the namesake and signature crop of Knott's Berry Farm.

Boysenberries are large, dark reddish-black, and combine a sweet flavour with a distinct tang, making them especially popular for pies, cobblers, jams, and canning. They are grown mainly on the Pacific coast of the United States, from southern California up through Oregon, and in New Zealand; their short shelf life once limited commercial popularity, but they remain a favourite in home gardens and at seasonal farmers' markets.

Main nutrition value

Per 100g, frozen unsweetened boysenberries (USDA has no raw boysenberry entry; this single-ingredient frozen fruit is the closest available to raw):

Boysenberries are particularly high in fiber and manganese, and provide notably more folate than most berries.

How best to be consumed

Boysenberries are best eaten fresh in season, but their short shelf life means most people meet them frozen, canned, or turned into jam, pie filling, or the syrup famously used for Knott's Berry Farm's boysenberry treats. Unsweetened frozen berries keep nearly all the nutrition of fresh fruit and make a good year-round substitute.

Overconsumption could cause…

Plain boysenberries are gentle on the body, with the main risk being mild bloating or loose stools if a large amount of their fiber is eaten at once. The bigger concern is how they are often served — canned in heavy syrup or baked into sugary pies and jams — which can add far more sugar than the berries themselves contain, so choosing fresh or unsweetened frozen fruit keeps that in check.

GroupsBerriesRose family (Rosaceae)Low fatLow sodiumRich in folateFresh

Related foodsLoganberryBlackberryRaspberryStrawberryDewberryServiceberry

U.S. Department of Agriculture, FoodData Central — Boysenberries, frozen, unsweetened (FDC ID 171713), 100g portion: https://fdc.nal.usda.gov/food-details/171713/nutrients Encyclopaedia Britannica — Boysenberry: https://www.britannica.com/plant/boysenberry