Hi Baraob,
Here's a recipe for a Dark Czech Lager that I use. It's basically a homebrew version of U Fleku's Tmave. Use a double decoction or a 120 minute boil to get some melanoidins happening.
Recipe: Czech Tmave (Dark Lager)
Style: Czech Dark Lager
TYPE: All Grain
Recipe Specifications
--------------------------
Batch Size (fermenter): 20.00 L
Bottling Volume: 19.00 L
Estimated OG: 1.053 SG
Estimated Color: 22.0 SRM
Estimated IBU: 28.0 IBUs
Brewhouse Efficiency: 75.00 %
Est Mash Efficiency: 93.7 %
Boil Time: 120 Minutes
Ingredients:
------------
Amt Name Type # %/IBU Volume
3379.28 g Bohemian Pilsner (Weyermann) (2.0 SRM) Grain 1 74.0 % 2.20 L
479.49 g Carabohemian (Weyermann) (70.0 SRM) Grain 2 10.5 % 0.31 L
479.49 g Munich II (Weyermann) (8.5 SRM) Grain 3 10.5 % 0.31 L
228.33 g Carafa Special III (Weyermann) (470.0 SRM) Grain 4 5.0 % 0.15 L
31.25 g Saaz [3.75 %] - First Wort 120.0 min Hop 5 15.0 IBUs -
32.49 g Saaz [3.75 %] - Boil 60.0 min Hop 6 13.0 IBUs -
1.0 pkg Octoberfest/Marzen Lager (White Labs #WLP820)
Mash Schedule:
-------------
Name Description Step Temp Rise Time Step Time
Mash In Add 20.00 L of water at 39.4 C 38.0 C 0 min 0 min
Mash Step Add 0.00 L of water at 50.0 C 50.0 C 12 min 5 min
Mash Step Add 0.00 L of water at 75.0 C 75.0 C 50 min 10 min
Mash Out
Sparge
Wild About Hops published a lager & pilsner recipe book recently that's worth a look.
https://www.wildabouthops.nz/home_brew_recipe_books.html