I Soaked My Tart Spring Rhubarb in Baking Soda Water Before Making a Crisp

I Soaked My Tart Spring Rhubarb in Baking Soda Water Before Making a Crisp — The Surprising Results After One Hour

Spring rhubarb is famous for its vibrant color and intensely tart flavor. While that tangy bite is part of its charm, it can sometimes overwhelm desserts like crisps, pies, and cobblers. Curious to see if I could naturally reduce some of the acidity without relying on extra sugar, I decided to try an unusual kitchen experiment: soaking chopped rhubarb in a baking soda solution before baking.

Here’s exactly what happened.

Why I Tried a Baking Soda Soak

Rhubarb contains natural acids that give it its signature tartness. Since baking soda is mildly alkaline, it can neutralize some of those acids. My goal was simple: soften the sharp sourness while maintaining the rhubarb’s fresh flavor and texture.

Unlike adding more sugar, this method aimed to reduce acidity directly rather than simply masking it.

The Baking Soda Solution

For the soak, I mixed:

4 cups water

1 teaspoon baking soda

I stirred until the baking soda dissolved completely, then added the chopped rhubarb, making sure all the pieces were submerged.

What Happened After One Hour

After soaking for about an hour, the changes were immediately noticeable.

The Color Softened Slightly

The bright ruby-red stalks became a bit duller in appearance. While they still looked appealing, the vibrant color wasn’t quite as intense as when they first went into the solution.

The Texture Became Softer

The rhubarb pieces felt noticeably more tender. The alkaline solution had begun breaking down some of the plant’s cell structure, making the stalks less firm than fresh-cut rhubarb.

The Tartness Was Reduced

The biggest change was in the flavor. A quick taste test revealed that the sharp, mouth-puckering sourness had mellowed considerably. The rhubarb still tasted distinctly like rhubarb, but the acidity was much less aggressive.

Some Juices Were Released

The bowl contained a surprising amount of pink liquid by the end of the soak. The rhubarb had released some moisture, which carried away a portion of its natural acids.

How the Rhubarb Performed in the Crisp

After draining and lightly rinsing the rhubarb, I used it in my favorite crisp recipe.

The finished dessert had:

A milder, more balanced flavor

Less need for added sugar

A softer filling texture

Slightly less vibrant color than usual

The rhubarb baked down beautifully, creating a smooth, jammy filling beneath the crunchy oat topping.

Was It Worth It?

Yes—with a few caveats.

If you find rhubarb too tart and want a naturally milder flavor, a brief baking soda soak can help. However, soaking for too long may make the rhubarb overly soft and diminish its bright color.

For best results:

Use only 1 teaspoon baking soda per 4 cups water.

Limit soaking time to 30–60 minutes.

Rinse thoroughly after soaking.

Avoid stronger solutions, which can create an unpleasant soapy taste.

Final Verdict

My baking soda experiment successfully reduced rhubarb’s tartness and created a smoother, gentler flavor profile in the finished crisp. While it slightly softened the texture and muted the color, the trade-off was a more balanced dessert that required less sugar.

If you’ve ever found rhubarb a little too sharp for your taste, this simple kitchen trick may be worth trying during peak spring rhubarb season. One hour in a baking soda bath transformed my crisp in a way I never expected—and the results were surprisingly delicious.