Kate1949
Just found these:
www.healthline.com/nutrition/dairy-foods-low-in-lactose
www.baliza.de/en/blog/files/intolerance-lactose-free-butter.html
www.mdpi.com/2072-6643/11/3/551/htm
During butter production, most of the water-soluble components in milk, including lactose, are removed, thereby reducing the lactose content in butter to <0.1%.
Thought I should check properly before I cause problems for your husband!
The last one is very interesting and explains quite a lot about how lactose free dairy is achieved.
A famous matador gored by bull!
Platonic friendships - do they exist?
I did the shaking way once my arms ached for hours! 