▁than ▁ 9 % ▁vol . ▁Ak ost né ▁a rom at ické ▁š um iv é ▁ví no ▁" Qual ity ▁a rom atic ▁spark ling ▁wine " ▁is ▁obtained ▁only ▁by ▁making ▁use , ▁when ▁const itut ing ▁the ▁cu v ée , ▁of ▁gra pe ▁must ▁or ▁gra pe ▁must ▁in ▁fer ment ation ▁which ▁are ▁derived ▁from ▁specific ▁wine ▁gra pe ▁vari eties ▁on ▁a ▁list , ▁excess ▁pressure ▁of ▁not ▁less ▁than ▁ 3 0 0 ▁k Pa ▁( 3 ▁bar ), ▁of ▁which ▁the ▁actual ▁alco hol ic ▁strength ▁may ▁not ▁be ▁less ▁than ▁ 6 % ▁vol . ▁and ▁of ▁which ▁the ▁total ▁alco hol ic ▁strength ▁may ▁not ▁be ▁less ▁than ▁ 1 0 % ▁vol . ▁ ▁Trad itional ▁terms ▁P est ov ate ľ ský ▁Se kt ▁ ▁Basic ▁conditions ▁of ▁the ▁production ▁are ▁met ▁with ▁condition ▁for ▁producing ▁quality ▁spark ling ▁w ines ▁and ▁the ▁last ▁phase ▁of ▁the ▁process ▁of ▁spark ling ▁wine ▁yield ing ▁is ▁carried ▁out ▁by ▁the ▁win eg ro wer ▁of ▁the ▁v ine yard ▁from ▁which ▁g rap es ▁used ▁for ▁the ▁production ▁are . ▁Single ▁components ▁of ▁the ▁cu v ée ▁of ▁the ▁p est ov ate ľ ský ▁se kt ▁shall ▁be ▁from ▁one ▁wine - g row ing ▁area . ▁ ▁Se kt ▁v ino hr ad ní cke j ▁ob last i ▁ ▁Spark ling ▁wine ▁obtained ▁by ▁primary ▁or ▁secondary ▁fer ment ation ▁of ▁quality ▁wine ▁from ▁g rap es ▁grown