Cucumber Mint Pineapple Smoothie

heaping cups (10 oz) pineapple, frozen or fresh

heaping cup (7 oz) English cucumber, sliced

(packed) fresh baby spinach

small sweet apple (like Gala), cored and chopped

mint leaves (and stems), depending on leaf size and preferred mintiness *(see first note)

cold water

ice cubes, if using fresh pineapple