Halaal Food & Drinks

Eating vegetables that are not washed and eating from utensils that are not washed

Q: What is the ruling for the following:

1. If someone cooked veges without washing them (veges might have some dirt like on it) and eatimg them, would this be halal?

2. If someone does not wash the cooking utensils and cooks in this way, would consuming the food prepared in those unwashed utensils be halal?

3. If roti is prepared on a 'tawa' which releases some of its black particles, when roti is heated over it, the black particles stick on the roti, will consuming the roti with those tawa black particles halal?

Eating fruits with larvae

Q: Sometimes when we open plums (fruits), there are larvae. Is it permissible to eat these plums if we remove the larvae? Sometimes the larvae has left small balls of feces which are stuck to the plum and difficult to remove. Do we have to throw away these plums?

Wine vinegar

Q: I would like to ask you about the Brandywine vinegar as I am studying in Germany and almost every other has this Branntweinessig and they use it as a cheap preservative for yogurt, ketchup, mayonnaise, even some milk drinks also have this. So is it permissible to use this or not as due to language barriers I could only rely on translation which literally means wine vinegar.