I've never eaten them, but the kids love them at other peoples houses but remark they are rubbery! They've pestered me into making Jamie's 15 minute prawn laguine next week some time and I'm not sure whether to get frozen or fresh uncooked tiger prawns, recipe calls for uncooked but doesn't say which and I don't want them complaining mine were rubbery too, unless of course that's the way they're meant to be!
You can buy frozen uncooked prawns. I hate frozen seafood and have found you can buy quite cheap fresh prawns if you hold off and only buy them when they're on offer (guess they don't keep so every now and then, supermarkets sell off the remainder of a batch cheap).
Sorry, that didn't answer your question. Cook with uncooked prawns. If they are already cooked you just throw them in near the end to heat through really. Agree, over cooked prawns just taste like rubber.
Yep, agree that it's overcooking that makes prawns go rubbery - they really take hardly any time to cook. Less of a risk of that if you buy uncooked, definitely. Feel like I should point out that tiger prawns are pretty dodgy, ethically speaking (intensive farming practices etc) but you may be less of a sandal-wearing hippy than me!