Apparatus for preparing a quantity of beverage suitable for consumption, including: a first brew chamber part and a second brew chamber part , being movable relative to each other between an open position and a closed position, wherein in the closed position the second brew chamber part closes the first brew chamber part for forming a brew chamber (22A,B), an arresting mechanism for arresting the first brew chamber part and the second brew chamber part relative to each other in their closed position, the arresting mechanism comprising a latching member arranged at the first brew chamber part and a counter-latching member arranged at the second brew chamber part, or vice versa the latching member and the counter-latching member being movable relative to each other between a latching position and an un-latching position, the arresting mechanism further comprising an arresting part being movable relative to the latching member and the counter-latching member between an arresting position and an un-arresting position, wherein in the arresting position the arresting part arrests and/or actuates an engagement of the latching member and the counter-latching member in their latching position, thereby arresting the first and second brew chamber parts relative to each other, and in the un-arresting position un-arrests and/or un-actuates an engagement of the latching member and the counter-latching member in their un-latching position, thereby un-arresting the first and second brew chamber parts relative to each other, characterized in that the arresting part in the arresting position at least partly surrounds the latching member and/or the counter-latching member from an outside and especially abuts against the latching member and/or the counter-latching member. a first brew chamber part and a second brew chamber part , being movable relative to each other between an open position and a closed position, wherein in the closed position the second brew chamber part closes the first brew chamber part for forming a brew chamber (22A,B), an arresting mechanism for arresting the first brew chamber part and the second brew chamber part relative to each other in their closed position, the arresting mechanism comprising a latching member arranged at the first brew chamber part and a counter-latching member arranged at the second brew chamber part, or vice versa the latching member and the counter-latching member being movable relative to each other between a latching position and an un-latching position, the arresting mechanism further comprising an arresting part being movable relative to the latching member and the counter-latching member between an arresting position and an un-arresting position, wherein in the arresting position the arresting part arrests and/or actuates an engagement of the latching member and the counter-latching member in their latching position, thereby arresting the first and second brew chamber parts relative to each other, and in the un-arresting position un-arrests and/or un-actuates an engagement of the latching member and the counter-latching member in their un-latching position, thereby un-arresting the first and second brew chamber parts relative to each other, characterized in that the arresting part in the arresting position at least partly surrounds the latching member and/or the counter-latching member from an outside and especially abuts against the latching member and/or the counter-latching member. <EOS>