1. Non-alcoholic beverage with a taste of beer, in which the mass ratio of polyphenol (s) and the total amount of extractive component (s) (percent by weight of polyphenol (s) / percent by weight of the total amount of extractive component (s)) is from 20 × 10 to 50 × 10 inclusive. 2. A beer-flavored soft drink according to claim 1, wherein the weight ratio of polyphenol (s) to the total amount of extractive component (s) (percent by weight of polyphenol (s) / percent by weight of the total amount of extractive component (s)) ranges from 20 × 10 to 40 × 10 inclusive. 3. A beer-flavored soft drink according to claim 1, wherein the weight ratio of polyphenol (s) to the total amount of extractive component (s) (percent by weight of polyphenol (s) / percent by weight of the total amount of extractive component (s)) ranges from 20 × 10 to 30 × 10 inclusive. 4. A soft drink with the taste of beer according to any one of paragraphs. 1-3, in which the total amount of extractive component (s) is from 0.1 to 2% by weight inclusive. 5. A beer-flavored soft drink according to claim 4, wherein the total amount of extractive component (s) is from 0.1 to 1% by weight inclusive. A beer-flavored non-alcoholic beverage according to claim 4, wherein the total amount of extractive component (s) is from 0.1 to 0.5% by weight inclusive. A beer-flavored soft drink according to claim 4, wherein the total amount of the extractive component (s) is from 0.1 to 0.35% by weight inclusive. A soft drink with the taste of beer according to any one of paragraphs. 1-7, in which the extractive component (s) includes an extractive component (s) obtained from mugi. 9. Flavored soft drink1. Безалкогольный напиток со вкусом пива, в котором массовое соотношение полифенола(-ов) и общего количества экстрактивного компонента(-ов) (процент по массе полифенола(-ов)/процент по массе общего количества экстрактивного компонента(-ов)) составляет от 20×10до 50×10включительно.2. Безалкогольный напиток со вкусом пива