Add the gooseberries and 4 litres of water to the pan.
Slowly bring the pan to the boil, once boiling, turn it down and let it simmer.
Once the gooseberries have been simmering for about 5 minutes you can start using the masher to gently mash the ingredients in the water for a minute or so, this will help the juices infuse with the water. (Be careful with this step, the water is boiling and over enthusiastic mashing will cause splashes of hot liquid!)
Turn off the heat and put a lid over the pan (or tea towel). Leave the the liquid to cool to room temperature. (If you have plenty of time you could leave this overnight, helping it to develop a stronger flavour)
Once the liquid has cooled you can start filtering it into a clean saucepan using the sieve, muslin and ladle. (Be careful not to squash the juice through the cloth, this will cause unwanted particles to be pushed through and take much longer for your wine to clear)
Bring the liquid back to the boil quickly, then carefully add the sugar to the pan while gently stirring it. Once the sugar has dissolved you can turn the heat off. This process just ensures that that all liquid is completely sterile when going into your Demijohn.
If your saucepan has a lid, put it on and leave the pan to cool for about an hour.
Once the liquid has cooled enough for you to able to easily handle it without gloves, you can add the liquid to you Demijohn using your sterilised funnel. Once filled put your sterilised Airlock on straight away. (Don't try and add boiling water to the Demijohn as this can cause it to smash)
Add the yeast, use the quantity stated on the packaging. (To work successfully yeasts need to be added when the liquid is between 20 - 25 centigrade)
Now your wine can start fermenting! For best results keep it in a warm dark place without fluctuating temperatures like an airing cupboard.