How to Blend Soup Without Splattering
A few simple habits, like submerging the blade fully and tilting the pot, keep hot soup in the pot and off your walls.
Blending hot soup with an immersion blender is fast and convenient, but a splash of 180-degree liquid is no joke. The good news is that splattering almost always has a direct cause you can fix. Most problems come down to the blade not being deep enough in the liquid, the blender running too fast for thin soups, or the pot being too shallow for the volume of soup. Fix those three things and cleanup becomes a quick wipe rather than a scrub.
Keep the Blade Bell Fully Submerged
The most common cause of splattering is running the blade at or near the surface of the liquid. The guard bell at the bottom of the shaft is designed to trap liquid against the blades so air cannot get pulled in. If even part of that bell is above the soup, air rushes in and the blender flings liquid outward. Push the head down until the entire bell is covered, ideally with an inch or two of soup above it. For chunky soups with large solids, tilt the pot slightly and work from the deeper end. Once you feel resistance drop and the blend turns smooth, the blade is doing its job cleanly.
Start on the Lowest Speed Setting
Starting at high speed with thin or nearly smooth soups throws liquid around before the vortex has a chance to form properly. Always start at the lowest speed available, then increase gradually once the blades are moving through thicker material. Models with variable speed control, like the Braun MQ505 with its push-button 2-speed setup and a 4.6-star rating from 5,900 reviews at $79.95, let you ease into the blend rather than shocking thin soup with full power from the first second. The same principle applies to any immersion blender: low and slow at the start, faster once the blend is visibly pulling into a vortex.
Use a Deep, Narrow Pot or a Tall Blending Container
A wide, shallow pan gives the soup nowhere to go except sideways. A tall, narrow pot keeps the vortex contained and dramatically reduces splatter. If your soup is already in a wide pot, transfer a portion to a tall pitcher or deep mixing bowl before blending, then combine everything after. Many immersion blenders include a tall blending cup specifically for this reason. The All-Clad 10942212300, rated 4.5 stars across 1,700 reviews, runs 600 W and measures 17.25 inches long, which gives plenty of shaft depth when working with a full stockpot. More shaft depth in the liquid means more control and less mess.
Let the Soup Cool Slightly Before Blending
Boiling soup at a rolling simmer contains more dissolved gas and moves more aggressively around the blades, which increases splatter. Pulling the pot off the heat and letting it sit for 3 to 5 minutes makes a real difference. The soup does not need to be cold or even lukewarm, just off the active boil. This brief rest also lets large air bubbles escape from the surface, which reduces the chances of a pocket of hot steam hitting the blade at the wrong moment. You can still blend at a safe working temperature, typically 160 to 170 degrees Fahrenheit, with far less drama.
Move the Blender in a Slow Arc, Not Fast Circles
Rapidly circling the blender around the pot stirs up the soup and creates waves that can crest above the blade bell. A slower, controlled arc from one side of the pot to the other keeps the blend even and gives the vortex time to pull material in from the sides. Lift the blender only when the motor is off or at its lowest setting, never at full speed, and always keep the head submerged while the motor is running. Practicing this deliberate motion is especially useful for soups with heavy chunks like potato or butternut squash that need to be moved toward the blade rather than chased around the pot.
Cover the Top of the Pot With a Folded Towel
For especially thin soups or broth-heavy blends, a folded kitchen towel draped loosely over the top of the pot catches any droplets that do escape. Leave enough of a gap for the blender handle to pass through. This trick costs nothing and adds a meaningful layer of protection for your hands, your sleeves, and the stovetop. It is particularly handy when using a model like the Mueller MU-HB-02, which has over 52,000 reviews at 4.4 stars, 9 speed settings, and a price of $39.99, since the higher speed ranges can move thin liquids more forcefully than expected on the first use.
Match Pot Size to Your Batch Volume
Keep the soup no more than two-thirds full in whatever vessel you are blending in. If a recipe yields 8 cups of soup, blend it in a pot that holds at least 12 cups. This headroom gives the vortex room to spin without pulling the surface down to the blade bell. It also means you can angle the blender without the head breaking the surface. If you frequently blend large batches, a stockpot in the 6 to 8 quart range is worth having on hand just for this step.
Frequently asked questions
Why does my immersion blender splatter even when the blade is submerged?
If splattering continues with the blade submerged, the most likely causes are running the blender at too high a speed for the consistency of the soup, or lifting and moving the head too quickly between positions. Try dropping to a lower speed setting and moving the blender in a slower, more deliberate arc across the pot. Very thin soups are more prone to this than thick purees.
Is it safe to use an immersion blender in a pot that is still on the stove?
It is generally safe to blend directly in the pot as long as the burner is off and the soup is not at a rolling boil. Blending in a pot still on an active burner risks burns from rising heat and increases the chance of steam pockets forming near the blade. Pull the pot off the heat, let it settle for a few minutes, then blend. Always keep the cord away from the burner.
Can I blend a full pot of soup at once?
You can, but keeping the soup at two-thirds of the pot's capacity gives better results and less mess. If your pot is very full, ladle out some soup into a second container, blend what remains, then combine. This is faster than cleaning splatter off the backsplash and reduces the risk of the vortex pulling the surface below the blade bell.
Does a more powerful immersion blender splatter more?
Higher wattage motors can move liquid more aggressively, especially at the top of their speed range. A model with variable speed control lets you match power to the task. Starting at a lower speed with a powerful motor gives you the same fine result without the extra chaos. The key is not to avoid powerful blenders but to use the full speed range rather than defaulting to maximum from the start.
What is the best pot shape for blending soup without splatter?
A tall, narrow stockpot works better than a wide, shallow saute pan. The tall sides contain the vortex and catch any droplets that might otherwise travel sideways. If you only have a wide pot, tilt it at a slight angle so the soup pools deeper on one side, then keep the blender in that deeper section throughout the blend.