That’s what I suspected. Definitely put them back in the pot after draining over low heat for like ten minutes. That will remove the moisture. The butter and milk are the only moisture you want really. I also melt the butter and whisk it into the milk then add them together slowly as I mash. That way you can get the consistency where you want. You can’t be certain how much water is still in them so sometimes it takes a bit less than you planned but this way the ratio of butter to milk is consistent no matter how much or little you needed.
That’s what I suspected. Definitely put them back in the pot after draining over low heat for like ten minutes. That will remove the moisture. The butter and milk are the only moisture you want really. I also melt the butter and whisk it into the milk then add them together slowly as I mash. That way you can get the consistency where you want. You can’t be certain how much water is still in them so sometimes it takes a bit less than you planned but this way the ratio of butter to milk is consistent no matter how much or little you needed.