Excellent, another convert!! Well, I have to say that's a pretty phenomenal introduction to Korean food. Many Korean-Americans have never seen food that way and it's very impressive that your friend's mother still prepares in that manner .
One big problem is a self-confidence barrier for Korean restauranteurs, assuming that a foreign audience wouldn't appreciate these more 'strange' dishes that are so iconic in only one country. I remember when 'tofu stew' became more popular in New York, I was naively shocked that Americans would prefer that over Korean BBQ. Now BCD Tofu House in NY K-town is ALWAYS the most packed.
If you ever want to try out some simple recipes, the youtuber Maangchi is a very charismatic Korean lady that makes it fun to learn - https://www.youtube.com/user/Maangchi