Why does my kitchen sink drain so slowly?

Usually this is caused by a partial blockage to the drain under the kitchen sink. Firstly try using a plunger if you have one as this can sometimes push the blockage through. Secondly try using some drain cleaning solution like “Moflo” or something similar but be careful and be sure to read the directions on the bottle completely as this can be a dangerous product if used incorrectly. Thirdly try removing the trap below the sink to see if it is clogged with food scraps etc. This does require more technical skill. If all the above fails to clear the drain then it is more likely to be a larger blockage further down the drain and will require a plumber with the right tools and machinery to get the drain cleared fast.