I do a 1:16.667 ratio of coffee to water. That would be 30g coffee in 500g water. Pre rinse the filter. Then I add enough boiling water to bloom the coffee. After about a minute I start adding more water. Just enough to keep the grounds below liquid level. I swirl clockwise and then counter clockwise after each pour.
That’s it. Keep pouring until target amount of water is reached.
Communication and transparency. Everyone should know so that everyone can make decisions based on their own risk tolerance.
Personally, in an open group, barriered sex is the default except for two primaries. In a closed group, I think it just depends on everyone risk tolerance and trust.
Personally I’d be fine going barrier free if I was in a closed group I trusted. Like all things, the bigger the group, the more likely somone isn’t playing by the rules.
So I think it depends a lot on the circumstances.