Optimal products design for producing standard ceramic porcelain products from Ohiya clay was determined in this study using desirability function analysis. Results revealed that the alumino-silicate constitutes 91% of the total mineralogical composition of Ohiya clay and 42:32:20 at a firing temperature of 1250/1300 oC; 42:33:17 at a firing temperature of 1300 oC; 41:32:27 at a firing temperature of 1000 oC as the optimal mix of the clay, feldspar and silica for producing standard low/high voltage insulators, tiles and tablewares respectively. The production of the 11 kV electric insulator, 400 × 400 mm tile, serving dish at optimal settings are respectively six hundred and twenty-five naira (₦625), three hundred and twenty-two naira (₦322), three hundred and four seven (₦347) against the market prices of one thousand naira (₦1000), three hundred and fifty naira (₦350), four hundred and twenty naira (₦420) respectively. This translates to 60%, 9% and 21% in profit for these products. Hence, adoption of the optimal mixing ratio as well as exploitation of this natural resource is highly recommended.