Sadly, option 1/2/3 is all you'll ever see in that drop-down menu.
The specific food corresponding to options 1/2/3 can be found in a (different) link. It should be found somewhere in the MMB, but if your flight is far from now, it may be that there is a change in menus. As they can only display one menu for each route, a future menu can't be shown.
Go to "Meals" in MMB, and you should find the link just above the drop down. This link will normally go to the menu. If it doesn't (only shows generic description of the SPML) then you can call or send a mail to CS to get the menu.
Last edited by intuition; May 13, 2017 at 2:18 am
Reason: Adding pic