Tested: How to get beet juice out of espresso machine

Immediate Action (first 5 minutes)

Beet juice is a nightmare. It stains everything. The deep red pigment, known as betalain, is highly reactive and loves porous surfaces. If you're reading this right after a spill, stop what you're doing. Don't wipe it with a dry paper towel. That just pushes the red liquid into the microscopic scratches on your machine's plastic drip tray and stainless steel faceplate.

I learned this the hard way. Last Thanksgiving, I tried making a beetroot latte for my sister-in-law using my Breville Barista Express. I knocked over a 12-ounce glass measuring cup, and bright red liquid flooded the drip tray. Panic set in. But acting fast is the only way to save your gear. You have a strict five-minute window before the stain sets into the plastic and rubber seals.

Grab a damp 12x12 inch microfiber cloth. Blot the spill gently to lift the liquid without spreading it. Next, purge your steam wand. If beet milk got sucked up into the wand, you need to blast steam for exactly 10 seconds to clear the internal tube. I've seen baristas ignore this step, only to serve pink, earthy-tasting milk to customers the next day. Finally, run a blank water shot through the group head. This flushes out any stray juice that splashed up into the shower screen. Act fast, and you can reverse the damage.

What You'll Need (tools/products)

I've tested dozens of cleaners on my own machines over the last 10 years. Standard dish soap won't cut it. You need alkaline cleaners to break down the organic pigments, and mild oxidizers for the stubborn plastic stains. Here is my exact toolkit for this job.

Product	Price Range	Why I Recommend It
Urnex Cafiza Espresso Cleaner	$15-25	Alkaline powder that destroys coffee oils and organic plant dyes.
Pallo Coffeetool Brush	$12-15	Angled bristles and a built-in scraper for the group head gasket.
OXO Good Grips Steam Wand Brush	$8-10	Stiff nylon bristles fit perfectly into the narrow wand tip.
Bar Keepers Friend Soft Cleanser	$5-7	Liquid version is safer for stainless steel faceplates than abrasive powder.
Distilled White Vinegar	$3-5	Mild acid for neutralizing the alkaline Cafiza residue later.

Step-by-Step Removal

This isn't the quickest cleaning routine, but it's the most thorough. Follow these seven steps to get your machine looking brand new.

Step 1: Disassemble and Isolate

Pull the portafilter out. Remove the metal filter basket. Take off the plastic drip tray and the stainless steel grill. Lay them in your kitchen sink. I always put a folded towel at the bottom of the sink first. This prevents the metal grill from scratching your porcelain basin while you work. Keep the small parts organized so you don't lose the shower screen screw.

Step 2: The Alkaline Soak

Boil a kettle of water. You want it around 170°F. Fill a 2-quart plastic basin with the hot water and dissolve one tablespoon of Urnex Cafiza. Submerge the portafilter, the metal basket, and the plastic drip tray. Let them soak for exactly 15 minutes. The alkaline solution breaks the chemical bonds of the betalain pigment. You'll actually see the water turn a murky purple as the stain lifts off the plastic.

Step 3: Drop the Shower Screen

While the parts soak, tackle the group head. Grab a flathead screwdriver and carefully pop off the shower screen. On my Gaggia Classic Pro, this takes two seconds. On a Breville, you might need to unscrew the center bolt. Beet juice splashes up and hides behind this metal mesh. If you skip this step, your next espresso shot will taste like a muddy root vegetable.

Step 4: Scrubbing the Group Head Gasket

Dip your Pallo Coffeetool brush into the hot Cafiza solution. Scrub the silicone group head gasket vigorously. Beet juice loves hiding in the lip of that rubber seal. Use the scraper end of the brush to dig out any compacted coffee grounds mixed with the red juice. Wipe the exposed group head clean with a damp cloth before reattaching the shower screen.

Step 5: Steam Wand Surgery

If you frothed beet milk, the inside of the wand is coated. Mix a half-teaspoon of Cafiza in a small 12-ounce pitcher of hot water. Submerge the steam wand tip into this solution. Let it sit for 5 minutes. Afterward, remove the pitcher and purge the wand with full steam pressure for 15 seconds. Use the OXO brush to scrub the exterior holes while the metal is still warm.

Step 6: The Exterior Polish

The splash zone on the front of your machine probably looks terrible. Shake your bottle of Bar Keepers Friend Soft Cleanser. Apply a dime-sized drop to a damp microfiber cloth. Rub the stainless steel faceplate in the direction of the grain. This removes the pink haze without scratching the finish. Wipe it down with a clean, wet cloth to remove any chemical residue.

Step 7: Flush and Reassemble

Rinse all the soaked parts thoroughly under warm tap water. Snap the drip tray and grill back onto the machine. Lock the portafilter in place. Run three blank water shots through the group head to flush out any lingering Cafiza. Pull a test shot with cheap coffee beans. If it tastes bitter or soapy, run two more water shots until the flavor is clean.

Alternative Methods

Sometimes, the plastic drip tray holds onto a faint pink shadow even after the Cafiza soak. I'll be honest, this takes a bit more elbow grease. Here are two backup methods I keep in my back pocket when the alkaline soak isn't enough.

Method 1: Hydrogen Peroxide and UV Light

Buy a standard bottle of 3% hydrogen peroxide from the pharmacy. Soak a paper towel in the peroxide and lay it flat over the stained plastic tray. Leave it there for two hours. If you can move your machine near a sunny window, do it. The UV rays catalyze the peroxide, bleaching the organic beet pigment completely white. I've saved countless ruined Tefal and Breville trays with this exact trick. It's highly effective on polymers.

Method 2: Lemon Juice and Coarse Salt

If you don't have peroxide, use your pantry. Squeeze half a lemon directly onto the plastic tray. Sprinkle a heavy layer of coarse kosher salt over the juice. Take a silicone spatula and scrub the salt into the plastic. The citric acid breaks down the stain, while the salt acts as a gentle abrasive. Rinse it off after 10 minutes. This works best for fresh stains that are less than 24 hours old.

Method	Best For	Time Required
Cafiza Alkaline Soak	Metal parts and fresh spills	15 Minutes
Hydrogen Peroxide + UV	Stubborn plastic tray shadows	2 Hours
Lemon and Salt Scrub	Quick fixes under 24 hours	10 Minutes

Prevention Tips

Cleaning up beet juice is a chore you don't want to repeat. After hosting a dinner party where I served vibrant pink lattes, I realized I needed a better system to protect my gear. Here is how I prevent stains from happening in the first place.

• Buy a dedicated pitcher: I use a 20-ounce Rattleware latte art pitcher exclusively for colorful, vegetable-based milks. It costs about $25, but it saves my primary 12-ounce pitcher from permanent staining. Keep it separate from your daily dairy gear.
• Use a silicone splash mat: Place a 12x16 inch silicone mat under your espresso machine. When you inevitably spill a few drops of beet juice while pouring, it hits the non-porous silicone instead of your countertop or the machine's plastic base. You can just toss the mat in the dishwasher later.
• Switch to beet powder: Fresh beet juice is incredibly messy and stains instantly. I've started using freeze-dried beetroot powder mixed into oat milk. It gives you that beautiful magenta color but is much easier to wipe up if you spill it on the drip tray.
• Rinse immediately: Never let a pitcher with beet residue sit on the counter. The moment you finish pouring your latte, rinse the pitcher with hot water. Dried beet milk acts like cement and will require a heavy scrubbing session later.

FAQ

Will beet juice ruin my espresso machine's internal boiler?

No, the internal boiler is completely sealed from the group head and steam wand exterior. The juice only affects the external parts, the shower screen, and the steam tip. As long as you flush the group head and purge the wand immediately, your internal heating elements are perfectly safe from the red pigment.

Can I use bleach to remove the pink stain from the plastic drip tray?

I strongly advise against using chlorine bleach on espresso machine parts. Bleach degrades the food-safe plastics and can ruin the silicone gaskets, causing them to crack and leak under pressure. Stick to oxygen-based cleaners like hydrogen peroxide or alkaline powders like Cafiza to lift the stain safely without compromising the machine's integrity.

Why does my coffee taste like earthy beets after cleaning?

This happens when beet milk residue gets baked onto the inside of the steam wand or the group head shower screen. You likely didn't purge the steam wand long enough, or you skipped the alkaline soak for the portafilter. Run a 50/50 mix of distilled white vinegar and water through the group head, then flush with plain water to neutralize the earthy flavor.

Can I put the plastic drip tray in the dishwasher to remove beet stains?

Don't do this. The high heat of the dishwasher drying cycle will actually bake the betalain pigments deeper into the porous plastic, setting the stain permanently. Furthermore, the intense heat can warp the plastic tray, making it impossible to slide back into the machine's base properly.

How often should I backflush after making colorful lattes?

If you are making vegetable-infused drinks daily, you need to backflush with Cafiza every single evening. The plant sugars and pigments build up much faster than standard dairy or oat milk. For occasional weekend beet lattes, a standard weekly backflush routine is perfectly fine to keep your machine spotless.