"This is a pinch of this recipe, where most of the ingredients are to your taste preference. Two jalapenos provided plenty of delicious heat for me. Garnish with chopped nuts, sesame seeds, and sliced red chile peppers. Furikake is also great as a topping!"
Substitute apple cider vinegar (such as Bragg®) for the rice vinegar if desired. Peanut butter can work instead of roasted sesame oil in a pinch. Use 4 packets sugar substitute instead of the sugar if desired.
I haven't tried them, but fish sauce or hoisin might be great toppings as well.
For stronger flavor, refrigerate sunomono overnight.