Bayern’s supporters unfurled a banner early in the second half of the goalless draw that read: “Away ticket LFC 48£ FCB 55€”.
The gesture was applauded around Anfield by Liverpool supporters.
The “Twenty is plenty” refers to the campaign launched in England by the Football Supporters’ Federation for clubs to cap ticket prices for visiting supporters at £20.
Earlier this month, the English Premier League announced that its clubs would continue to cap away tickets at £30 for another three seasons after introducing the plan for the start of the 2016-2017 campaign.
This is not the first time Bayern’s fans have protested against the cost of ticket prices.
In response, Anderlecht was ordered to partially refund Bayern supporters after the competition’s governing body UEFA ruled ticket prices were excessive. Bayern was fined by UEFA for the protest.
Liverpool supporters also have been vociferous in their criticism of ticket prices.
The applause from the Liverpool supporters was as raucous as it got at Anfield with neither team managing to find a breakthrough.
“It was an intense game for both sides,” Liverpool manager Jurgen Klopp told BT Sport. “It is not a game we will remember in 30 years. It’s the result we have and we will work with that.”
Goals were in short supply across the Champions League on Tuesday.
In the night’s other game, Barcelona was held to a goalless draw by French side Lyon.
It was the first night of Champions League football without a goal since March 15, 2016, when Manchester City was held by Dynamo Kiev and Atletico Madrid finished goalless against PSV Eindhoven.