Complex sentence: It is the brewery's flagship beer, accounting for 90% of sales and with an output of in 2010, and with a sales increase in 2011 of 22%, making it the UK's fastest growing ale three years in a row.
Split into simpler sentences: It is the brewery's flagship beer, accounting for 90% of sales and with an output of in 2010. In 2011, sales increased by 22%, making it the UK's fastest growing ale for three years in a row.