Mix palm sugar, sugar, salt and pumpkin puree in a bowl.
Heat milk for 1 minute in microwave, take out, add in butter, stir to melt. Add in pumpkin mixture, stir to combine
Proof yeast in lukewarm water with a tsp sugar. Once bloomed, mix with pumpkin mixture.
Place flour in a big bowl, make a well in center, and pour yeast mixture. Knead.
Cover with plastic cling, let rest for an hour, until doubled in size
Punch dough, knead a bit and divide into two portions. Slice each portion to make 10 buns
Shape each dough into a ball and with a knife, cut as shown on picture
Press the center with your finger and place a pretzel stick
Place buns on baking sheets and let rise again for 45 mins
Brush with egg yolk and bake at 350 F for 20 mins