What is the total number of Asian patients who are allergic to peanuts?
Asian refers to race like 'asian%'; allergic to peanuts refers to allergies where DESCRIPTION = 'Allergy to peanuts'; 

SELECT COUNT(T2.patient) FROM allergies AS T1 INNER JOIN patients AS T2 ON T1.PATIENT = T2.patient WHERE T1.DESCRIPTION = 'Allergy to peanuts' AND T2.race = 'asian'