Mashing is one of the most important steps in brewing — where starch from malt is converted into sugars with the help of heat and enzymes.
This stage determines the beer’s body, sweetness, and alcohol potential.
Mash In – Starting the Mash
This is the point where you mix the crushed malt with hot water.
The goal is to reach the right temperature (here 65°C) where enzymes are most active.
These enzymes break down starch into fermentable sugars.
Too low → thin, dry beer.
Too high → sweet, heavy beer.
Mash Out – Finishing the Mash
After 60 minutes at mash temperature, raise the temperature to 75°C for 10 minutes.
This stops enzymatic activity and prepares the grain bed for lautering (filtering and rinsing).
Meanwhile, heat your sparge water to 77–79°C.
This hot water will rinse the remaining sugars from the grains during sparging.
Sparging = slowly pouring hot water over the grain bed while collecting the sweet wort below.
Do this gently to avoid disturbing the grain bed, which acts as a natural filter.
When you’ve collected the full pre-boil volume of wort, move on to the boil stage (60 minutes).
Hop Additions During the Boil
Early hops → add bitterness.
Late hops → add flavor and aroma.
Dry hops (cold) → add intense, fresh aroma.
Mash Temperature and Its Effect on Beer
| Mash Temp | Effect | Result | Best for |
| 62–64°C | β-amylase dominant | More fermentable sugars → higher ABV, drier finish | IPA, Pilsner, Saison |
| 65–67°C | Balanced enzymes | Medium body, harmonious flavor | Pale Ale, Amber Ale, Lager |
| 68–70°C | α-amylase dominant | Less fermentable sugars → fuller body, sweeter finish | Stout, Porter, Bock |
In short:
62–64°C → Dry, crisp, higher-alcohol beer
65–67°C → Balanced, classic beer
68–70°C → Sweet, malty, full-bodied beer
Practical Brewing Notes
Keep the mash at 65°C for 60 min, stirring occasionally.
If brewing in a pot (non-electric), reheat gently when the temperature drops.
With an electric all-in-one system, set the recirculation pump at ~50–60% for optimal flow.
After 60 min, lift or strain the grain bed and sparge slowly with 77–79°C water until the volume is reached.
Begin the 60-minute boil once all wort is collected.
During boiling:
Add hops at the indicated times.
When finished, cool rapidly to 20–22°C using a wort chiller or ice bath.
(Fast cooling reduces haze and infection risk.)
Transfer to a sanitized fermenter, pitch the yeast, and seal with an airlock or blow-off tube into sanitized water.