• Soy sauce. Maybe you have some takeout packets you need to use up?
• Ginger. One or two small “thumbs” is a solid amount, but if you’re cooking your main course with ginger, chances are whatever is left over will yield a nice dressing.
• Olive oil
• Last remnants of ketchup or another tomato-based or tomato-adjacent sweet sauce. Ideally the last bits of a nearly empty bottle. Barbecue sauce could be interesting. As could chili sauce or cocktail sauce. Put some olive oil in the jar and shake until you loosen as much as possible.
• Last remnants of honey and/or maple syrup, or something else sweet. Just as with the ketchup, slosh around some oil to help extract the final drops.
• Last remnants of anything else you want to experiment with. Mayo? Horseradish? That random specialty marinade?
• Additional ketchup, honey, etc., as needed (just in case the last remnants don’t carry you all the way there)
• Salt
• Pepper
• Something acidic. Rice vinegar and/or lemon juice would work well.

OPTIONAL:

• Garlic. Fresh or garlic powder.
• Celery or carrots or another veggie you can blend to help give the dressing body
• Sesame oil (I think this is important to give it a certain signature flavor, but it’s not required)
• Water to help thin the dressing, as needed
• Any herbs or spices that sound good to you!