Air bubbles or gas in mashed potatoes are typically caused by one or more of the following factors:

1. Over-mixing

• When potatoes are over-mixed, particularly with a hand or stand mixer, the starch in the potatoes becomes overly agitated, resulting in a gluey texture that traps air bubbles. The vigorous action can incorporate excess air into the mash.

2. Boiling Technique

• If the potatoes are boiled at too high a temperature or unevenly cooked, the outer layers become soft while the center remains firm. This can lead to inconsistent mashing and air pockets.

3. Incorrect Draining

• If boiled potatoes aren't thoroughly drained before mashing, residual water can interfere with the texture, creating gaps or bubbles when mixed.

4. Type of Potato

• Potatoes with higher starch content (like russets) tend to break down more easily when mashed, but they can also become gluey and trap air if overworked. Waxy potatoes (like red or Yukon golds) hold their shape better and are less prone to this issue.

5. Butter and Milk Addition

• Adding cold butter or milk directly to the potatoes can cause uneven mixing. Warm butter and milk blend more easily, reducing the chance of air incorporation. 

6. Mechanical Whipping

• • Using high-speed tools like immersion blenders or food processors introduces a significant amount of air into the mash, leading to a light, whipped texture but also air bubbles.

Tips to Avoid Air Bubbles:

• Cook Potatoes Evenly: Cut potatoes into uniform chunks and simmer them gently in salted water until tender. Avoid boiling aggressively.
• Drain Thoroughly: After cooking, let potatoes sit in a colander or return them to the pot on low heat for a minute to evaporate excess moisture.

• Use the Right Tools: Mash potatoes with a potato masher or ricer for a smoother texture without incorporating air. Avoid over-mixing.
• Warm Your Add-ins: Heat butter and milk before adding them to the mash to ensure smooth incorporation.

 By controlling these factors, you can create a smooth, bubble-free mash.

Check out our Fluffiest Mashed Idaho® Potatoes Recipe HERE!