Best Types of Blackberries? We Know One. Meet Sweet Karoline!

Here is a fun blackberry truth: no two varieties taste the same. One can be tart enough to make your face scrunch up. Another can taste like you snuck a spoonful of sugar into the clamshell. In the produce world, a ‘type’ of fruit is usually called a variety, and blackberries have a lot of them. The blackberry you grabbed last month might have looked just like the one you grabbed today, but odds are high that they’re a different type.

So, how do you find the best blackberry type? The one that actually tastes the way a blackberry should? That is what we are getting into today, walking you through the most popular blackberry types, what makes some sweeter than others, and (no surprise here) why our Sweet Karoline® takes the crown.

Grab a handful and let’s go.

What Helps Make Blackberry Types Sweet?

Why does one blackberry taste like a dessert and another taste like a science experiment? Three things are doing most of the work behind the scenes.

• Genetics. Every blackberry type has a different built-in sweetness ceiling. Some were bred for sweetness, others were bred for hardiness or yield. 
• Ripeness at harvest. A blackberry’s flavor peaks the moment it is picked. Unlike some fruits, blackberries do not continue to ripen after harvest, so when they get pulled off the cane matters a lot. Pick too early and you lock in tartness. Pick at peak ripeness and you get a blackberry that tastes the way it should.
• Growing conditions. Sunshine, soil, water, and weather all play a role in how much natural sugar a berry can produce. A great variety grown in a tough season can still come up short.

This is also where Brix comes in. Brix is the scale food scientists use to measure natural sugar content in fruit. The higher the Brix, the sweeter the bite. Most grocery blackberries land between 8 and 10 Brix. Our Sweet Karoline lands between 14 and 18.

In short? The sweetest blackberry type is the one where great genetics, peak ripeness, and good growing conditions all show up at the same time.

Why Sweet Karoline Is the Best Tasting Blackberry

Here is the part you came for. Out of every blackberry on the market, why does our Sweet Karoline keep landing at the top?

Simple. It was bred for flavor first. Most commercial blackberries were bred for shelf life and shipping durability, and flavor came second. We flipped the script. Flavor came first, and the rest (size, color, firmness) followed.

Then there is the Brix rating. Sweet Karoline lands between 14 and 18 Brix, which is dessert-level sweetness with no added sugar in sight. That is sweeter than an apple, sweeter than a strawberry, and right in peach territory.

Peak ripeness matters too. Our Berry Fresh growers hand-select Sweet Karoline at the exact window where sugar, color, and firmness all line up. No early picking. No rushing to market.

Sweet Karoline also delivers about 8 grams of fiber per cup, which makes it genuinely good for you. (Bonus points for a fruit that tastes like a treat.)

Sweet Karoline is grown through a partnership between Berry Fresh and Alpine Fresh, so look for it at retailers who carry either brand.

How to Choose the Best Types of Blackberries for Flavor and Quality

Once you know what blackberry type you want, picking a good clamshell at the store is the next step. You’ll want to look for color, firmness, smell, and leakage.

1. Color. A great blackberry is deep, dark, and almost black-purple. 
2. Firmness. Check all sides of the clamshell. None of the berries should be smashed against the side or mushy. Soft or mushy berries were picked too late.
3. Smell. A ripe blackberry has a sweet, slightly floral smell through the clamshell.
4. No leaking. If there is juice pooling at the bottom of the clamshell, some of the berries have already burst. Skip that one.

Once you get them home, treat them right. Store unwashed blackberries in the fridge in their original clamshell, and only wash right before eating to keep them from breaking down too quickly.

Not sure how long they will last? Here is a quick guide on how long berries keep in the fridge so you can plan ahead.

And if your blackberries do start to soften before you can eat them, do not toss them. Frozen blackberries are perfect for smoothies.

There are plenty of good blackberries out there, but only one is bred specifically for bold, dessert-level sweetness. Our Sweet Karoline takes the title of best blackberry for a reason, and once you try one, you will get it.

Try Sweet Karoline blackberries and taste the difference in every bite. Find Berry Fresh at a store near you.