Place potatoes in a large pot and cover with water.
Add 1 teaspoon salt to the pot.
Cover and bring to a boil. Reduce heat to medium-low.
Simmer until tender, about 15-20 minutes.
Poke with a fork after 15 minutes. If they are fork tender, they are ready.
Cooking time varies, depending on the size of the potatoes. Bigger potatoes will need more time cooking.
Drain potatoes, then return to the pot.
Mash potatoes with a potato masher, then add milk, butter, and cheese.
Continue to mash until smooth and fluffy, and the cheese melts.
Add the jalapeno, cumin, salt and black pepper.
Mix to combine.
Then serve and enjoy!