commit c59df72af9d2877d3de01d51a8e8c301c5f2c17c
Author: Adam Borowski <kilobyte@angband.pl>
Date:   Mon Oct 31 16:19:41 2011 +0100

    Restore the healing ghouls get from clean chunks.
    
    Before the food changes, they got it in 4/5 cases (5/5 for "bad" chunks).
    By my mistake, it became 1/5 (and 5/5).
    
    I wonder about removing badness from the formula at all -- losing some theme
    but making playing more straightforward.

diff --git a/crawl-ref/source/food.cc b/crawl-ref/source/food.cc
index 8fd43a2..19f4907 100644
--- a/crawl-ref/source/food.cc
+++ b/crawl-ref/source/food.cc
@@ -1729,7 +1729,7 @@ static void _eat_chunk(corpse_effect_type chunk_effect, bool cannibal,
                 if (you.species == SP_GHOUL)
                 {
                     int hp_amt = 1 + random2(5) + random2(1 + you.experience_level);
-                    if (!x_chance_in_y(contam + 200, 1200))
+                    if (!x_chance_in_y(contam + 1000, 5000))
                         hp_amt = 0;
                     _heal_from_food(hp_amt, 0, !one_chance_in(4),
                                     x_chance_in_y(contam, 5000));