For me, there’s not much better than an ice-cold coffee on a hot summer day. One problem though: if you want to sweeten your coffee you only have a few options. Option one is to use sugar, which is hard to dissolve and can result in a pile of sugar gunk at the bottom of your glass. Option two is using a store-bought coffee syrup, but those tend to be cloyingly sweet and flavored with junk.
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