Go for Miso or shoyu (soy sauce) base for the broth if you don’t have the time to do meat base as these are quite time intensive. Plus chicken stock broth is actually one of the hardest to do in the ramen world. The best chicken broth is clean tasting with lots of chicken flavour, it is complex yet simple, compared to the others, chicken broth ramen are much harder to find in Japan.
As for the recipe, there are plenty online, Miso broth are pretty bombproof, most of the flavour comes from the miso so just get good quality ones and you should be fine, you can even make that in advance to taste then heat up on the day.
In terms of the toppings, keep it simply yet varied. One of the best thing about ramen is like eating a roast dinner, have a bit of meat one bite, a roast potato the next, some carrots, back to some meat then a bit of cabbage etc. Same idea as Ramen, noodles one bite, meat, then some greens.
I would pick at least 4 items out of the list below, the Top 3 a must-have.
1 - Meat - Pork Belly (sous vid)
Sliced medium rare steak
Sliced Roast Chicken Breast (quick flash fry on a pan before serving)
2 - Spring onions - must have, generous serving
3 - Marinated boiled egg - must-have. egg into boiling water for exact 6:30 seconds for the perfect yoke consistency. For best egg you have to go expensive, those £2.50 free range one, like Clarence Court have really nice red yoke.
4 - Mushrooms - Lots to choose from but I'd go exotic.
Enoki Mushrooms are great for fresh.
Dried Shiitake Mushrooms are fantastic too (soak in water for an hour first, then boil for a few minutes, sliced and serve)
Dried wood ear mushrooms, same as Shiitake to prepare
Stay away from your typical button mushrooms
5 - Beansprouts, either lightly fried or raw straight into the bowl
6 - Bamboo shoots
7 - Nori - a sheet of dried seaweed
8 - Sweetcorn
9 - Japanese fishcake (hard to find)
When it comes to serving, the order is
Bowl - Tare - Broth - Noodle - Meat - rest of the toppings and Nori sheet at the edge in the end
Place each one down gently, with purpose like a design. Presentation plays a big part.