Combine sugar, butter, fresh lemon juice and zest in a microwave safe bowl.
Microwave on high (mine is 1000w) 1 minute and stir, microwave 1 minute and stir, take out
Whisk eggs and cornflour then gradually whisk in the water.
Pour the egg mix into the lemon whisking all the time.
Microwave uncovered for 4 - 6 minutes stirring at least every 2 minutes but keep an eye on it I found after 4 mins increments of 1 minute was good. Let it boil but don't let it boil over.
Pour into sterilised jars and seal while hot. Store in a cool dry place or the fridge for up to 2 months.
*Sterilise jars - I use the boiling jars and lids in a very large pot for 15 minutes method using tongs to take jars out of pot. Careful taking out the lids.
I used recycled jars from my cupboard.
I filled the jars and screwed on the lids tightly and briefly turned upside down to push the air out then turned upright, 1 jar had a little leakage I used it first, the other didn't.
Notes
This recipe has a beautiful tang it's from my CWA cookbook.I used a fine grate for the zest.The lemon curd as a base for the bottom of a pudding is nice. We had this for dessert with ice cream the other night.It can be drizzled randomly over the top of a vanilla cake/cupcakes before baking.Lovely spread on toast, pancakes or scones and even better with a dollop of freshly whipped cream.A dollop on vanilla ice cream is also nice.