Clean and sanitise fermenter, spoon, cup and jug.
Fill the cup to 3/4 full with cold brewing water. Sprinkle in the dried yeast and gently stir in. Cover.
Soften the malt cans in hot water for about 5 minutes.
Pour 2 litres of boiling water into your 5L jug. Open the cans and pour the contents into the jug.
Steep half of each of the hops - 50g Nelson Sauvin and 50g Rakau for 30 minutes in 1L of water at 80 degrees C, and strain the water into your fermenter using a sieve or coffee press.
Mix the concentrated wort, hop steep and water well, then pour into your fermenter. Top up to 23 litres with cold quality brewing water. Ensure the wort temperature is 15 - 25 degrees Celcius. Vigourously stir the wort with a large spoon to oxygenate it. Pour in the cup of yeast slurry and gently stir into the oxygenated wort.
Seal the fermenter lid and insert airlock. Ferment at 18-22 degrees Celcius for four days.
On Day 4, put the remaining half of each of the hops into a sanitised hop sock or tube, tied with non-scented dental floss. Add sanitised weight to help the sock sink. Gently sink the hops into the wort. Remove on day 6. continue to ferment for 4-8 more days at 18-22 degrees Celsius.
Check the gravity on day 7. If the SG remains steady for three days, fermentation is complete. Keg or bottle your brew as per standard practise.