The present invention relates to the unexpected discovery of a new strain of yeast, dubbed GY7B, which is related to, but genetically and phenotypically distinct from, Lachancea thermotolerans. The invention provides methods of brewing sour beer using GY7B, wherein the methods do not require use of lactic acid or lactic acid producing bacteria.

The invention relates to yeast cells with useful characteristics, including being capable of utilizing panose as sole carbon source and/or capable of utilizing one or more dipeptidesas sole nitrogen source. The invention also relates to yeast cells with useful genotypes including comprising at least 4 allelic genes encoding IMA1p and/or at least two allelic genes encoding IMA5p.

The present invention relates to the unexpected discovery of a new strain of yeast, dubbed GY7B, which is related to, but genetically and phenotypically distinct from, Lachancea thermotolerans. The invention provides methods of brewing sour beer using GY7B, wherein the methods do not require use of lactic acid or lactic acid producing bacteria.

The present invention relates to the field of fermentation and in particular to methods of improving the flavour and quality of beer produced by fermentation.

The present invention relates to alpha-amylase variants with improved stability in the presence of glucose and/or relatively higher activity on long chain versus short chain substrates. The present encoding invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

Provided herein are genetically modified yeast cells that recombinantly expresses a gene encoding a mutant beta-lyase. Also provided are methods of producing fermented products and methods of producing ethanol.

The invention relates to methods of producing a brewer's wort comprising adding to a mash a mature thermostable variant of a parent glucoamylase at least 70% identical to SEQ ID NO:1, SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:8 or SEQ ID NO:10 before, during or after 5 liquefaction of starch, as well as mashing or brewing compositions comprising said mature thermostable variant of a parent glucoamylase.

Provided herein are genetically modified yeast cells that recombinantly expresses a gene encoding a mutant beta-lyase. Also provided are methods of producing fermented products and methods of producing ethanol.