1. spicy; vinegary; garlicky
2. People have tattoos of the bottle. / There are Sriracha personalised license plates. / Astronauts took it into space. (any 2)
4. because there was a war / because people of Chinese ancestry were being persecuted in his home country (any 1)
5. (i) freighter/ship
6. David Tran / Tran / David (any 1)
8. He had to make money to feed his family.
10. The flavour can vary. / There are numerous brands selling their version of the sauce. (any 1)