Add the potatoes to a medium saucepan and cover with cold water by 2-inches.
Bring to a rolling boil and add 1 teaspoon salt. Reduce heat to medium-low to low heat, maintaining a gentle simmer. Cook the potatoes until they are fork-tender and the skin is just starting to split from the potatoes - total time will vary depending on the size of your potatoes, but these small potatoes took approximately 18 minutes.
Drain the water and potatoes into a large colander. Immediately return the pan to medium heat. Melt the butter and add the olive oil, garlic, and a generous pinch of salt and black pepper. Mix thoroughly to combine. Stir continuously for 1 minute.
Tip - if your potatoes are on the larger side, or you'd like more surface area for the garlic butter to penetrate the potatoes, halve each potato before moving on to the next step.
Return the warm potatoes to the pan. Mix well to coat the potatoes in garlic and butter. Season with additional salt and black pepper, to taste. For a little heat, add a small pinch of crushed red chili flakes.
