Does this look normal. I have never seen like this on the top. I'm worried as this is my first time harvesting and using yeast over. The one is a coffee chocolate stout. The other is a blonde ale. Both have looked like this for about 4 days. Since the krausen dropped. The stout taste great I haven't tasted the blonde. I would like to again harvest and reuse but want to make sure this isn't an infection. The chocolate stout used cocoa powder and it's the first time I have used that so wondering if that is the reasoning for this weird look. They are a week old today. Fermentation lasted just 2 days. Pitched a huge starter in the stout and didn't use a starter on the blonde. I should also note I was beyond sanitary with everything. I boiled the water for washing, boiled the mason jars for 15 mins then also sprayed down with starsan. Soaked and sprayed EVERYTHING with starsan before use. Was very cautious. View attachment ImageUploadedByHome Brew1455312404.590208.jpgView attachment ImageUploadedByHome Brew1455312420.860252.jpg