My mother used to tap the "eyes" of the coconut at one end to find out if they were fresh. Another thing she did was to shake them to feel how much water is inside - the more there is sloshing around, the fresher the coconut. Or so I imagined. I still dont know how exactly she determines the tenderness of the coconut, but as far as I'm concerned, I only know that a coconut is rotting when the "eyes" are actually squishy to the touch. Short of that, I havent a clue.
I've also shaken more coconuts than a Santa's helper has shaken an empty donation can (beware, Christmas is on its way...) but none of the shaking or sloshing made it any clearer to me whether the coconut was tender on the inside.
Which, I guess, is why coconut rice hasnt been on my agenda much. Non-tender coconut flesh, when grated or shredded, tastes an awful lot like wood shavings. You can chew and chew and chew until your mouth is dry, but swallowing is not an option because you just KNOW that it will all stick halfway down your gullet if you make the attempt to ingest it. Somehow the prospect of sticking a bottle brush down my throat in an effort to push stubborn lumps of food down into my stomach just doesnt hold much appeal, strange though that may sound...
Anyway, coconut rice is the simplest of recipes to make, if you have cooked rice and freshly grated or shredded coconut at had. I dont think the dry stuff would work well here and I'm not going to attempt it ever. As far as I know, coconut rice is not an everyday dish - it wasnt at home, at any rate. My mother used to make it (along with other "kalanda sadam" - meaning "mixed rice" - like lemon rice and tamarind rice) for a particular religious occasion... which, I'm embarrassed to admit, I cant actually remember. (Update will follow when the information comes in!)
Oh by the way - some people dont bother to toast the shredded coconut at all, but I fry it very lightly so that the aroma and flavour of the coconut flesh are released.
Coconut rice tastes very nice with fried papadoms (poppadums/pappadams/appalam/papadam et al) or even potato crisps.
Recipe for: Coconut rice

Ingredients:
4 cups Basmati rice cooked al dente
1/2 cup fresh shredded coconut
2 tbsp oil
2 tsp urad dal, soaked for 10 minutes in 3-4 tbsp warm water
1/4 cup cashew nuts, broken coarsely
1-1/2 tsp little brown mustard seeds
5-6 fresh curry leaves
3-4 dried red chillies (or to taste), broken in half
Salt to taste
Pinch of asafoetida
Method:
1. Heat the oil in a large wok, drop in the mustard seeds, cover and let the seeds splutter (about 30-40 seconds).
2. Drain the urad dal and add it to the oil along with the next five ingredients.
3. Fry on medium heat until the dal and the nuts are beginning to turn golden brown. Dont turn the heat too high, or the red chillies will burn before the dal and nuts are fried enough.
4. Now add the shredded coconut and stir-fry it for 30 seconds or so, no more. Do not let it brown at all.
5. Then add the rice and salt to taste and mix well. I find that this rice benefits from sitting for about an hour or so, so that the flavours mingle.
6. Re-heat in the microwave oven and serve warm, along with potato crisps or fried poppadams.