A good way to reduce that sourness is to use ice cold water with a few ice cubes mixed in and left in the fridge over night. Then steam the next day. Always works out for me.
GD April Fools Day... Any other day and I wouldn't be apprehensive for posts like this.
On an unrelated sidenote, My 12mo batches ages out today. Interested to see the differences and if it'll be worth it or if I'll just turn to vinegar if it hasn't already