Add the goat cheese, sour cream and salt to the bowl of a food processor and process until smooth, about 30 seconds. Using a tablespoon, scoop out some of the mixture and roll it into a ball to form a truffle. Place on the prepared baking sheet and repeat until you have 24 truffles. Transfer to the freezer to firm up, about 10 minutes.
Put the dill and sesame seeds into separate small bowls. Mix the walnuts and cherries in a third small bowl.
Roll 8 of the cheese balls in the dill, 8 in the sesame seeds and 8 in the walnut and cherry mixture. Transfer the truffles to a serving platter. Insert a pretzel stick into each truffle. If making ahead of time, cover and refrigerate the balls without the pretzel sticks, then insert the sticks right before serving.