A system for preparing portions of a beverage suitable for consumption, comprising an apparatus for preparing the beverage and a closed and form-retaining holder removably received in the holder, which holder is at least filled with a product to be dissolved and/or to be diluted such as a concentrate. The apparatus is provided with a liquid device for dispensing under pressure a fluid comprising a liquid such as water and, optionally, a gas such as steam or air, a receiving space in which the holder is received and at least one probe provided with at least one channel which, on the one side, is in fluid communication with the liquid device and which, on the other side, terminates in at least one outflow opening of the probe. The apparatus is designed for puncturing the wall on a first side and for moving the probe and the holder relative to each other such that the probe, in use, can be inserted through the first side of the holder whereupon the at least one outflow opening reaches into the holder.