Alright, you’ve chosen your potato. Now let’s make magic. Here’s the only method you need to know.
Step one: Peel and dice your Russets into even cubes. Bigger cubes = uneven cooking. Smaller cubes = waterlogged potatoes. Aim for one-inch chunks.
Step two: Start them in cold, salted water. Yes, cold. This ensures they cook evenly from the outside in. Bring to a boil, then simmer until fork-tender.
Step three: Drain immediately. Then, here’s the pro tip: return the empty pot with the potatoes to the stove over low heat for one minute. This dries off any excess moisture. You want them steaming, not wet.
Step four: Mash by hand with a potato masher or ricer. Never use a food processor or blender—that activates the starch into a glue factory. Mash in warm butter and cream, and taste as you go.