I know I will not have any sourness @ 3 weeks, but what should it taste like 3weeks in? I did Jamil's Berliner from Jamil Show with a vial of wlp677 lacto pitched for 2 days before adding wlp011. The lacto was 6 months past the guarantee date, but it was quite active when I opened the vial, so I went with it. I did not notice any airlock activity for those two days. I'm getting a touch of wit flavors and wondering if a wild yeast might have snuck in on me.