I tried them after they cooled, before chilling, and they had a lovely very slightly runny consistency. I put them in the fridge for 3 hours, left them on the counter for 20 minutes to come to room temperature, and they're completely solid. You can stick a spoon in them and it'll stay upright. The texture is nothing like a custard. It's more like some sort of dense fudge. What am I doing wrong?