Boil pepitas to soften. Place pepitas in a saucepan and cover with water. Bring to boil then simmer 30 minutes. Cool completely and drain.
Blend cooled pepitas, water, nutritional yeast, vinegar, oil and salt until smooth. This could take around 3 minutes, even with a vitamix, so give the motor a rest every once in awhile. If using a regular blender it could take 7 to 10 minutes. The blender will heat everything, so let the mixture cool a bit just so that it’s not warm to the touch, that way the carrageenan doesn’t activate yet. Place in fridge to cool if you like. Then add the carrageenan and blend 20 more seconds.
In a sauce pan over low heat, cook for 8 to 10 minutes, whisking constantly. Alternate between a whisk and a rubber spatula to make sure you scrape the sides of the pot. It will get thick and begin pulling away from the sides. You’ll know it’s done because it’s thick and holding its shape as you stir it.
Fold in caraway and dill. Pour into mold immediately and smooth the top with a spatula. Cool 30 minutes at room temp. Cover and refrigerate for at least 4 hours to set completely. Invert onto a cutting board and go wild. It tastes best the next day, and even better the day after that!