Measure the nuts into your blender pitcher/canister. Pour in the hot coffee and add the maple syrup and salt. Blend -- working up to high after a few seconds -- for 1 minute or until completely smooth, creamy, and foamy. Taste and adjust the amount of sweetener and/or salt, if needed, blending for a few more seconds to incorporate. Enjoy immediately.
Feel free to tweak the amount of maple syrup to taste, increasing or even omitting it, if you like. You may also substitute honey (or your favorite sweetener) for the maple syrup.
If your blender isn't very powerful and you're worried about nut bits in your drink, you can either blend it longer or strain your finished "latte" through a fine mesh sieve into a mug. Alternatively, you can soak the nuts in the hot coffee for a few minutes to soften them before blending...though you may have to reheat your coffee once it's ready.