Beer foam is the existence of CO2 in beer in the form of dissolution, adsorption and compounds under certain pressure and low temperature. When fresh beer is beaten out of fermenter, due to pressure change and splash, CO2 is released from liquor and rises to liquid level. With the presence of viscosity of beer itself and some surface active substances, especially protein, the foam is not easy to burst and keeps for a period of time, forming a beautiful, white and delicate foam accumulation.what's the importance of the beer foam?
1.Lock up malt aroma in beer,the foam will protect the beer from bad taste.
2.malt aromais more mellow
3.taste more smooth
4.Identify the quality of beer
