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  1. or download this
    $hash{a}{drinks}=1; 
$hash{b}{drinks}=2;
  2. or download this
    +-------+     +----------+    +-----------+    +-------------+
| %hash | +-->| Anon Ref | +->| Anon hash | +->| Anon scalar |
...
              +----------+ |  +-----------+ |  +-------------+
              | addr   ----+  | drinks  ----+  | 2           |
              +----------+    +-----------+    +-------------+
  3. or download this
    >perl -e"$h{a}{d}=1; $h{b}{d}=2; print qq{$_: $h{$_}\n} for keys %h;"
a: HASH(0x22534c)
b: HASH(0x2253a0)
  4. or download this
    +-------+     +----------+         +-----------+    +-------------+
| %hash | +-->| Anon Ref |  +----->| Anon hash | +->| Anon scalar |
...
              +----------+     |
              | addr   --------+
              +----------+
  5. or download this
    +-------+     +----------+    +-----------+    +-------------+
| %hash | +-->| Anon Ref | +->| Anon hash | +->| Anon scalar |
...
              +----------+ |  +-----------+ |  +-------------+
              | addr   ----+  | drinks  ----+  | 2           |
              +----------+    +-----------+    +-------------+