In a large dish, combine warm milk, melted butter, sugar and yeast. Let sit for five to ten.
minutes until the yeast starts to froth and get active.
Add the mashed potatoes to the yeast mixture; thoroughly mix.
Gradually add the flour and salt to the mixture; whisk until a dough results.
Spoon the dough on a floured work area and knead for five to seven minutes until firm.
elastic and flawless.Initially raise the dough in a greased basin, cover with a towel or cling film.
towel and let rise in a warm environment until twice in size, one to two hours.
