As a international student living alone, I freeze hotdogs and spams after cutting in a portion so that I can make it quicker again later. In the same way, I freeze bacon, scallions and cabbage too. All I need to do is add extras such as onion, tofu, mushrooms, cheese, ramen noodles, and kimchi(tbh don't need them at all just need spam, hotdog, onion and cabbage)