Worldwide there are more than 40,000 different varieties of rice, though only a small number offer the quality acceptable to be grown commercially in the U.S. In the United States, these varieties can be divided into long, medium, and short grain. Limited waxy rice and arborio is produced, as well as some aromatic and specialty varieties.

The primary differences in these rices is their cooking characteristics and, in some cases, a subtle flavor difference. From a nutritional standpoint they are equal and indeed can often (with the exception of waxy rice or arborio) be interchanged in recipes.

• Long
• Medium
• Short
• Sweet or Waxy
• Aromatic
• U.S. arborio