For the berry sauce, combine thawed frozen berries with lemon juice, sugar, and cornstarch in a saucepan and stir until thickened. After it cools, mix it with plain yogurt, berry granola, and fresh raspberries.
Before cooking the pretzels, wrap the 8 dough ropes around the dogs and cook them for 8 or 9 minutes. The dogs might turn out better if they're cooked beforehand.
Squeeze one of the lemons into the soymilk and let it sit while you prepare the rest of the soup. Peel and chop the cucumbers, mince the radishes and chop the herbs. Combine everything and blend it until smooth. Pour it through a strainer to get rid of extra chunks.