@CelloDan thank you, it will be a knife to your liking I believe.
I strongly agree with your daughters

Butter comes from a Cow, some salt and churning. Margarine is a totally artificial factory processed thing with colours, oils and all manner of chemical additions

plus it tastes greasy and vile

Don't agree with Jer at all on this, historically, cardio vascular problems shot up after the first quarter of the c20th which co-incided with the putting of margarines into processed foods and then getting people to eat the toxic stuff on bread etc

The real horror is putting margarines, processed factory made foods, sugar/art sweeteners together, an obesity /diabetic cocktail. The French and the Danes eat a lot of animal fat and theirlife expectancy/quality is very good. Quality is key, plus moderate intake.
That's a fine natural loaf you bake, mine is alas from a shop but it's a very tasty mixture of rye, wheat and linseeds. I shouldn't really eat bread as it disagrees with me, but I'm a loaf junky, like them all