text: # Find the IPAs
  is_ipa = df.beer_style.str.contains('IPA')
  df[is_ipa]
  
  # Find a subset of beer styles
  df[(df.beer_style == 'American IPA') | (df.beer_style == 'Pilsner')].head()
  
  # High Marks
  # Long way:
  df[(df.review_appearance >= 4) &
     (df.review_aroma >= 4) &
     (df.review_overall >= 4) &
     (df.review_palate >= 4) &
     (df.review_taste >= 4)]
  
  # Short way
  all_good = (df[review_cols] >= 4).all(1)
  df[all_good].head()
  
  # Pretty Good
  df[df[review_cols].mean(1) >= 4].head()
  
  # Top Beers
  top_beers = df['beer_id'].value_counts().head(10).index
  reviews.loc[pd.IndexSlice[:, top_beers], ['beer_name', 'beer_style']]
  
  