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You do include basil stems in pesto, and they can absolutely be blended right into the sauce for extra flavor and texture.
If you’ve ever stared at a pile of fresh basil and wondered whether you should include basil stems in pesto or toss them in the compost, you’re not alone.
Most recipes tell you to pluck the leaves, but those stems hold a ton of basil goodness that you don’t want to waste.
In this post, we’ll dig into why you should include basil stems in pesto, how to prep them for the best results, and a few simple tips to get the creamiest, most vibrant pesto every single time.
Let’s break it down.
Why You Should Include Basil Stems In Pesto
The short answer is that you include basil stems in pesto because they’re packed with the same aromatic oils that make basil leaves so delicious.
The stems aren’t just filler, they carry a slightly more intense herbal punch that can deepen the overall flavor of your pesto.
Many home cooks and even professional chefs have started to include basil stems in pesto as a zero-waste hack that adds complexity without any bitter notes.
Here’s why it works so well.
1. Flavor Concentration Lives In The Stems
When you include basil stems in pesto, you’re tapping into the part of the plant where essential oils are highly concentrated.
Those oils are responsible for that sweet, peppery, slightly clove-like aroma that basil is famous for.
The stems, especially the tender ones near the top, have plenty of that flavor locked inside.
So instead of just using leaves, you get a more rounded and robust basil taste when you include basil stems in pesto.
It’s a simple swap that makes your sauce taste noticeably fresher and more herbaceous.
2. Textural Benefits You Didn’t Expect
Adding the stems can give your pesto a slightly thicker, more rustic consistency that clings beautifully to pasta.
That’s because the fibrous parts of the stems break down in the food processor but still add a little body to the final sauce.
If you like a chunkier, artisanal-style pesto, then you definitely want to include basil stems in pesto.
On the flip side, if you prefer a silky smooth sauce, you can still include basil stems in pesto as long as you blend them for an extra minute or two.
3. Less Waste, More Flavor
Food waste is a big deal, and throwing away perfectly edible basil stems feels like a missed opportunity.
When you include basil stems in pesto, you’re using the whole herb, which is both economical and environmentally friendly.
A bunch of basil might have stems that make up almost a third of its weight, so you’re literally throwing away flavor if you skip them.
Once you start to include basil stems in pesto regularly, you’ll wonder why you ever discarded them in the first place.
It’s a small habit that makes a big difference in your kitchen.
How To Prep Basil Stems For Pesto
Now that you know you should include basil stems in pesto, the next step is figuring out how to get them ready.
Not all stems are created equal, so a little preparation goes a long way.
Here’s exactly how to handle them.
1. Use The Tender Upper Stems First
The top few inches of the basil stem are soft, green, and full of moisture, perfect for pesto.
Those upper parts are basically just elongated leaves, so you can snap them right off and add them to the blender.
The lower stems, especially the woody ones near the base, are tougher and more fibrous.
You can still include basil stems in pesto from the lower part, but they may need a little extra chopping first.
If you’re short on time, just focus on the top half and save the woody bottoms for stock or broth.
2. Give Them A Rough Chop
Before you toss the stems into the food processor, chop them into smaller pieces about an inch long.
This helps the blades grab them more easily and ensures everything breaks down evenly.
A rough chop also prevents long stringy bits from wrapping around the blade, which can be annoying to clean.
So yes, you include basil stems in pesto, but you do it smartly by prepping them first.
3. Blend Longer For A Smooth Finish
The stems are tougher than leaves, so your pesto will need a bit more time in the processor.
Start by pulsing a few times to break them down, then let it run continuously for a solid 30 to 45 seconds.
You’ll see the mixture turn from chunky to creamy as the stems get fully incorporated.
If the pesto looks too thick, add a splash of olive oil or a little pasta water to help things along.
Common Mistakes When Adding Basil Stems
Even though you can and should include basil stems in pesto, there are a couple of pitfalls to avoid.
It’s easy to get carried away, but here’s what to watch out for.
1. Don’t Add The Woody Bottom Ends
The very bottom of the stem, the part that was cut from the plant, is usually dry and woody.
If you include basil stems in pesto from that section, you’ll end up with a slightly grainy texture that’s not pleasant.
Snap the stem near the base, if it snaps cleanly, it’s tender enough, if it bends or feels tough, cut it off.
You can always save those woody ends to flavor soups or stocks later.
2. Balance The Liquid Ratio
Because stems hold a bit more fiber, they can soak up more oil than leaves alone.
That means your pesto might need an extra tablespoon or two of olive oil to reach the right consistency.
Don’t be afraid to adjust as you go, the goal is a sauce that’s loose enough to coat a spoon but not runny.
Once you get the hang of it, you’ll naturally know how much liquid to add when you include basil stems in pesto.
3. Don’t Skip The Salt
The stems have a slightly bitter edge when raw, but salt helps mellow that out beautifully.
A good pinch of flaky sea salt will bring out the sweetness in the stems and leaves alike.
Taste your pesto after blending and add salt gradually until it sings.
So, Do You Include Basil Stems In Pesto?
You do include basil stems in pesto, and it’s one of the easiest ways to elevate your homemade sauce.
The stems carry concentrated flavor, add a pleasant rustic texture, and help you cut down on food waste.
Just remember to use the tender upper stems, chop them roughly, and blend a little longer for maximum smoothness.
Avoid the woody bottom ends, adjust your oil ratio, and don’t be shy with the salt.
Pesto is forgiving, so experiment a little and find the balance that works for your taste buds.
Next time you’re whipping up a batch, grab those stems and throw them in, you’ll be glad you did.
Now go make the most flavorful pesto of your life.