I prefer boiling a tongue from a cow for around 3h and serve it with a horseradish sauce.
I made boiled tongue two weeks ago, nowadays its getting more and more complicated to order a tongue, they chop them into dog food because it seems nobody is eating this anymore.
Even my own children were disgusted by it at first because it is a part of the body that they eat there, it took them a while to understand that a chicken leg is also a part of the body ... I blame those terrible smartphone culture ... I feel very old now
There is a national dish in Austria called Tafelspitz, which is served with horseradish sauce. The meat used for it is from a cow or calf, basically the part between top side and ox tail, I guess it's called tri-tip, but not sure about that. it is as well boiled for 3hrs.
Children are not that adventurous, when it comes to food - it will change over the years - I guess it is more the texture of the meat than anything else, what is putting them off. Then again children experience basic flavors (bitter, sour, salty, sweet) in a different way than adults - not all what is pleasant to us, is as well pleasant for a child's taste buds and especially bitterness is really off-putting for children, whereas extremely sweet stuff is off-putting to us, but not to children, they love it. Intestines have quite often a bitter aspect to them and that is why those are not favorites of children.