There have been a number of brewers getting great results with gelatine as a fining lately so here is a tutorial on how to prepare and add it. Start with 200ml of room temp water. You can choose to boil this first and cool if you wish but Ive found this unnecessary since it will be pasteurised later on. But if you must then a tip is to use the micro wave to quickly boil and then chuck it in the freezer. Now add 2 level tea spoons of unflavoured gelatine and allow to stand for 10 min. This lets the gelatine bloom which is much like rehydrating dried yeast and will now look fluffy. Give it a swirl to mix in the gelatine and gently heat on the stove/microwave to 75C. Heating the gelatine too hot or even boiling will denature it and it will loose the fining ability making it useless. Hold the solution at 75C for 15 min to pasteurise then add to secondary/keg when rack to mix it well, you do not have to wait for it to cool before adding it to the beer. You should also only add it to beer that has been chilled. If added to the keg then give it a bit of a shake if youre unsure of it being mixing correctly and allow to sit cold for 3 days. The first pour from a keg will also be cloudy with yeast, just the same as if you had left a keg to sit for a number of weeks to clear. Gelatine does not 'set' on the bottom of the keg, so if you move it after clearing it will once again become cloudy just like a keg without gelatine. Gelatine works by clumping together yeast and increasing the particle size which allows it to fall out of suspension faster. Thats its start enjoying your clear beer.